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Mechanical Calculators Manufacturer Database
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Brand
|
Manufacturer |
Origin |
Founded |
Ended |
Type |
Info |
All (1162 brands) | - | - | - | - | - | - |
| A (113 brands) | - | - | - | - | - | - |
A. B. Addo | - | SWE | 1920 | - | M, E |  |
A. Fumeo SA | - | ITA | - | - | S | - |
A.-B. Affärssystem (ABA) | - | SWE | - | - | M | |
A.B. Original Odhner | - | RUS | 1874 | 1965 | M, E | - |
A.G. für Feinmechanische Industrie | - | GER | - | - | M, E | - |
A.G. für technische Industrie | - | SWI | - | - | M | - |
A.S. Nordisk Regnemaskinefabrik | - | DAN | - | - | M | - |
A.T. Ashwell | - | GER | 1897 | - | M | - |
A.W. Faber (-> Faber Castell) | - | GER | 1872 | - | S | - |
AA | Rely/Ricoh | USA | - | - | S | |
AB Advitaberg Industrier | - | SWE | - | - | M | - |
abc | Tokyo Electric | JAP | - | - | E | |
Accounting Machine Company (AMCO) | - | USA | 1917 | 1925 | M | - |
Acu-design | - | USA | - | - | S | - |
Acu-math | Acu-Rule Mfg. | USA | < 1948 | > 1965 | S | |
Acu-Rule Mfg. | - | USA | 1939 | - | S | |
Acumath | - | USA | - | - | S | - |
Adam Riese | - | GER | 1909 | - | M | - |
Add-A-Mite | - | USA | - | - | A | - |
Add-EM | Tom Thumb | USA | - | - | A | - |
Add-Index Corp. | - | USA | 1922 | 1934 | M, E | |
Add-Index Corp. | - | USA | - | - | ? | - |
Add-It | - | ? | - | - | M | - |
Add-o-Matic | Allied Mfg. Co. | USA | - | - | A | - |
Addac Co. | - | USA | 1925 | 1960 | M | - |
Addall Co. | - | UK | 1910 | - | M | - |
Adder Machine Co. | - | UK | 1904 | 1925 | M | - |
Adderator AB | - | DEN | 1912 | - | M | |
Addi | Holzapfel, Addiator | GER | 1933 | - | M | |
Addi-Cosmos | Schubert and Rother (Cosmos Büromaschinen) | GER | 1921 | - | M | |
Addiator Rechenmaschinenfabrik GmbH | - | GER | 1889 | 1975 | M, E | |
Addicalc | - | ? | 1925 | 1935 | M | - |
Addicalco | ACCA | ITA | 1947 ? | 1968 | M, E | - |
Addifix | - | JAP | > 1960 | - | E | |
Addimat | - | ITA | > 1950 | - | A | - |
Addimax | - | USA | 1923 | > 1950 | M | |
Addimult | Rechenmaschinenfabrik H.-W. Kübler | GER | 1950 | 1973 | M | |
Adding Machine Co. | - | USA | - | - | M | - |
Adding Typewriter Co. | - | USA | 1903 | 1909 | M | - |
Addipresto | Brevetti-Lanza | ITA | 1960 ? | 1975 | M | - |
Addist | R.H. Walker | USA | 1869 | - | A | - |
Addizionatrici, Calcolatrici, Contabili e Affini (ACCA) | - | ITA | < 1940 | - | M, E | |
Addmaster Corp. | - | USA | > 1950 | - | A, E | |
Addograph Manufacturing Co. | - | USA | 1900 | - | M | - |
Addometer | Reliable Typewriter & Adding Machine Corp. | USA | - | 1922 | M | - |
Adix | J. Zähringer, Fa. Adolf Bordt, Adix Co. | GER | 1903 | - | M | |
Adma | A.G. für Feinmechanische Industrie | GER | 1919 ? | 1921 | M, E | - |
Adsumudi Co. | Carl Werner, Rechnenmaschine Gesellschaft | GER | 1907 | - | M | |
Adwel | Jörgen S. Lien | NOR | 1955 ? | 1972 | M, E | |
Aero Products Research | - | ? | - | - | S | - |
AG Thornton | - | UK | > 1878 | - | S | |
Agathon | - | ? | 1950 ? | 1955 | M | - |
Ahrend | - | HOL | - | - | S | |
Alba | - | MEX | - | - | S | |
Albona | - | ? | > 1930 | 1954 | M, E | - |
Alco | - | JAP | - | - | M, A, S | |
Alcoa | - | ? | - | - | ? | - |
Aldo Bona S.A. | - | ITA | 1935 | - | M | |
Alfa | Aldo Bona | ITA | - | 1957 | E | - |
Alfa Inzadi | Sozzi-Inzadi | ITA | - | 1954 | M | - |
Alku | - | GER | - | - | S | |
Allen (-> Allen Wales) | - | USA | - | - | M, E | - |
Allen Wales Adding Machine Corporation | - | USA | 1923 | 1943 | M, E | |
Allied Mfg. Co. | - | USA | > 1930 | - | A | - |
Alpina Werk M. & M. Vorverk GmbH & Co. KG | - | GER | 1961 | 1970 | M | - |
Alro | - | HOL | < 1931 | - | S | |
Alvin | - | USA | - | - | S | |
American Adding Machine | American Can Co. | USA | 1913 | 1918 ? | M | - |
American Airlines, Inc. | - | USA | - | - | S | |
American Arithmometer Co. | - | USA | 1890 | - | M | - |
American Can Co. | - | USA | 1901 | - | ? | |
Amigo Addiermaschinen Gesellschaft | - | GER | 1925 | - | M | - |
Antares | Pozzi SPA, Antares S.p.A. | ITA | 1940 | 1960 | M | |
Appoulot | - | FRA | - | - | S | - |
Archimedes | Reinhold Pöthig (Glashütter Rechenmaschinenfabrik) | GER | 1906 | > 1984 | M | |
Archimedes | - | BRA | - | - | S | |
ARCUS | - | AUS | - | - | S | |
Argenta | Regent-Feinbau | GER | 1949 | - | M | - |
Argos | Gesellschaft fur Präzionstechnik G.m.b.H | GER | 1913 | - | A | - |
Aristo | Dennert & Pape | GER | 1936 | 1978 | S | |
Arithma | - | GER | > 1962 | - | A | - |
Arithmaurel | Maurel & Jayet | FRA | 1849 | - | M | - |
Arithmograph | Rustringer | GER | 1920 | - | M | - |
Arithmograph | Troncet | FRA | 1890 | - | M | - |
Arithmos | Orginal Ohdner | RUS | - | 1956 | M | - |
Arithstyle | Gesellschaft für Maschinenbau G.m.b.H. | GER | 1905 ? | 1920 | M | - |
Arnault-Peineau | - | FRA | - | - | S | - |
Arrow Calculator Mfg. Co. | - | USA | 1921 | - | M | - |
Arter, Dixon und Co. | - | UK | > 1890 | - | A | |
Arzberger | - | GER | 1866 | - | M | - |
ASA | - | ? | - | 1953 | M | - |
Ascota | VEB Buchungsmaschinenwerk | GER | < 1966 | > 1973 | M | |
Ashton, Isaac | - | UK | - | - | S | - |
Aston & Mander | - | UK | - | - | S | |
Astra | Astra Werke, VEB Mechanik | GER | 1919 | 1967 | M, E | |
Atlanta Adding Machines Co. | - | USA | - | - | A | - |
Atlas | - | USA | - | - | S | |
Auch, Jacob | - | GER | 1790 | - | M | - |
Ault | - | USA | 1897 | - | A | - |
Aurea | - | ? | 1956 ? | 1956 | M | - |
Austin Adding Machine Corp. | - | USA | 1912 | - | M | - |
Australian | - | AUS | - | - | S | |
Austria | Herzstark & Co. | AUT | 1906 | 1910 | M | |
Autarit Company, Ltd. | - | AUT | 1910 ? | 1910 | M, E | - |
Automatic Adding Machine Co. | - | USA | 1917 | - | M | - |
Automatic Bookkeeping Register Co. | - | USA | 1918 | - | M | - |
Automatic Multipler Co. | - | USA | <1901 | - | M | - |
Avergi | - | ? | - | - | S | |
AWF | - | GER | > 1918 | - | S | |
axbxc | Produx | GER | 1964 | - | M | - |
Axel Wibel AG | - | SWE | 1918 | - | ? | - |
Azevedo | - | POR | 1884 | - | M | - |
Azzola & C. | - | ITA | - | - | S | - |
| B (85 brands) | - | - | - | - | - | - |
Baby Calculator Sales Co. | - | USA | 1925 | - | A | |
Badenia | Math. Bäuerle GmbH | GER | 1904 ? | 1968 | M, E | - |
Bagge | - | ? | 1884 | - | M | - |
Bahmann | - | ? | 1888 | - | M | - |
Bair-Fulton Co. | - | USA | 1920 | 1940 | M | |
Baldwin, Frank S. | - | USA | 1875 | - | M | |
Balilla | Aldo Bona | ITA | > 1919 | - | M | - |
Ballardie, T.C. | - | UK | - | - | S | |
Barbotheu | - | FRA | 1968 | - | S | - |
Barbour | - | USA | 1872 | - | M | - |
Barit | - | FRA | 1901 | - | A | - |
Barnet | - | UK | 1842 | - | M | - |
Barrett Adding Machine Co. | - | USA | 1910 | 1922 | M, E | |
Bastiani, Attila | - | ITA | - | - | ? | - |
Bauer, Emil (-> Hannovera) | - | GER | - | - | ? | - |
Baum, Michel | - | GER | 1913 | - | A | - |
Bayerische Reisszeugfabrik AG | - | GER | 1893 | > 1950 | S | - |
Bayley | - | ? | 1880 | 1920 | M | - |
Beacon | - | KOR | - | - | S | |
Beaucourt | - | FRA | 1912 | - | ? | - |
Beauvais | - | FRA | - | - | S | - |
Beghin | - | FRA | - | - | S | |
Beiringer & Hebatanz | - | ? | 1873 | - | M | - |
Belga-Novic | - | BEL | - | 1932 | M, A | |
Bell-Punch Ltd. | - | UK | 1878 | 1950 | M | |
Beraplex | - | FRA | - | - | S | |
Bergmann Universal G.m.b.H. | - | GER | - | - | ? | - |
Berndt, O. | - | GER | 1881 | - | M | - |
Berolina | Schuster, Hamann | GER | 1901 | 1932 | M | - |
Beta Enterprises | - | USA | - | - | S | |
Bicor | - | ? | - | - | E | - |
Bieringer & Hebetanz | - | ? | 1873 | - | M | - |
Billeter, Ernest | - | SWI | - | - | S | - |
Bird | Illinois Bird Adding Machine Company | USA | 1922 | - | M | - |
Blair-Fulton Co. | - | USA | 1930 | - | A | - |
Blakey, Emmott & Co. | - | UK | <1885 | - | M | |
Blue Star | Tokyo Electric | JAP | 1951 | - | M | - |
Blundell Harling | Blundell Rules + WH Harling | UK | 1956 | act. | S | |
Blundell Rules Ltd. | - | UK | 1947 | 1956 | S | |
Bohn-Contex | - | ? | - | - | E | |
Bollée, Léon | - | FRA | 1888 | - | M | - |
Bolyai | Electro Murus | ROM | 1964 | - | M | - |
Bonham & Scham | - | ? | 1900 | 1910 | M | - |
Bonwitt | - | UK | <1900 | - | S | |
Boots Ringplan | - | UK | - | - | S | - |
Borland & Hoffmann | - | USA | 1878 | - | M | - |
Boucher | Stanley | UK | - | - | S | |
Boucher | - | FRA | - | - | S | - |
Bouchet, M. | - | USA | 1883 | - | M | - |
Bowler | - | UK | > 1960 | - | M | - |
Boykin | - | USA | - | - | S | |
Boykin, Bernard C. | - | USA | - | - | S | |
Braun, Antonius | - | GER | 1727 | - | M | - |
Braunschweig Rechnenmaschine-Fabrik Rema | - | GER | 1914 | - | A | - |
Brdr. Carlsen A/S | - | DEN | <1965 | - | M | |
Brenann | - | USA | 1925 | 1933 | M | - |
Brennan Adding Machines Co. | - | USA | - | - | A | - |
Brevetti | Sozzi Angelo & Co. | ITA | > 1950 | - | M | - |
Brevetti-Lanza | - | ITA | - | - | M | |
Brisson | - | FRA | - | - | S | - |
Bristol Line | - | ? | - | - | S | |
Britannic | Guy's Calculating Machines | UK | 1922 | - | M | - |
British Calculators Ltd. | - | UK | 1900 | 1910 | A | - |
British Thornton (-> Thornton) | - | ? | - | - | S | - |
Brother | - | JAP | > 1950 | - | E | |
Browne, Arthur, & Bros | - | USA | - | - | S | |
Browne, C.O. | - | AUS | - | - | S | |
Bruning, Charles | - | USA | - | - | S | |
Brunsviga | Brunsviga/Grimme, Natalis & Co. AG | GER | 1892 | - | M, E | |
Buchheister & Oppelt | - | GER | 1925 | - | A | |
Bull | - | FRA | < 1952 | - | ? | - |
Bulmers (Calculator) Ltd. | - | UK | > 1930 | > 1959 | M | - |
Bundy Mfg. Co. | - | USA | 1904 | 1906 | M | - |
Bundy Typewriter Co. | - | USA | 1950s | - | M | - |
Bunzel, Hugo | - | AUT | 1908 | - | M | |
Bunzel-Delton | Hugo Bunzel | AUT | < 1908 | - | M | |
Burattini, Tito Livio | - | ITA | 1600s | - | M | - |
Bürger | Citizen | ? | 1967 | - | E | - |
Burkhardt, Arthur (-> Erste Glashütter Rechenmaschinenfabrik | - | GER | 1878 | 1925 | M | - |
Büromaschinenwerke AG | - | GER | - | - | M | - |
Burridges and Marsham | - | USA | - | - | M | - |
Burroughs Adding Machine Co. | - | USA | 1886 | 1986 | M | |
Business | - | BEL | 1928 | - | M, A | - |
Büttner, Otto | - | GER | 1888 | - | M | - |
Bystritsa | - | RUS | - | - | E | |
| C (72 brands) | - | - | - | - | - | - |
C-Thru Ruler Co. | - | USA | - | - | S | |
C.M.C. Italcalcolo | - | ITA | <1955 | - | M | |
CAL | - | AUS | - | - | S | |
Cal-Co | - | ITA | - | - | S | |
Calco | A.S. Nordisk Regnemaskinefabrik | DAN | 1921 | - | M | - |
Calcorex | Tvornica Racunskih Strojeva (TRS) | YOU | 1965 | 1977 | M, E | |
Calculator | Joseph Kopfer & Sohne | GER | 1911 | - | M, A | - |
Calculator Co. | - | USA | - | - | ? | - |
Calcumeter | - | USA | 1901 | - | A | - |
Calcus Co. | - | CAN | 1920 | - | M | - |
Calepp | - | FRA | - | - | ? | - |
Caltec | - | UK | 70's | - | E | - |
Carl Lindström AG | - | GER | 1914 | - | M | |
Carl M. Behr & Co. | - | GER | 1908 | - | M | - |
Carl Walther | - | GER | 1886 | 1970 | M, E | |
Caroline | SIMEX | SWI | 1960 | 1970 | M | |
Caroll, D. | - | USA | 1876 | - | M | - |
Caze | - | FRA | 1720 | - | A | - |
Cellatron | VEB Rechenelektronik Meiningen | GER | 1963 | 1970 | M, E | |
Centigraph | Arthur E. Shattuck | USA | 1891 | - | M | - |
Chadwick | Solo | JAP | - | - | M | - |
Chapin, G.W. | - | USA | 1870 | - | M | - |
Charpentier | - | FRA | - | - | S | |
Charvoz, Inc. | Relay/Ricoh | USA | - | - | S | - |
Charvoz-Roos | - | USA | - | - | S | |
Chateau Frères | - | FRA | 1905 | - | M | |
Chatelain, Henri | - | FRA | - | - | S | |
Chevrolet | Dial-A-Matic | USA | - | - | A | - |
Chirchlow | - | USA | - | - | S | - |
Circolator | Circograf KG | GER | 1970 | - | S | - |
Citizen | - | JAP | 1963 | 1972 | E | |
Clary Multilpier Corp. | - | USA | > 1940 | 1969 | M, EM | - |
Classic | Aldo Bona, Classic & Cie | ITA | > 1950 | 1958 | E | - |
Classic | - | UK | - | - | S | |
Clemens Müller | - | GER | - | - | M | - |
CMI Inc. | - | JAP | 1950c | - | M | |
Colbert | - | FRA | - | - | M | - |
Colombus | Klein & Setter | GER | 1910 | - | M | - |
Colt's | - | ? | - | 1914 | M | - |
Columbus Calculator Co. | - | AUT | 1910 | - | M | |
Columbus Calculator Co. | - | AUT | 1920c | - | A | |
Comega | - | ? | ? | - | M | - |
Commercial Adding Machine Co. | - | USA | 1892 | 1901 | M | - |
Commodore Business Machines | - | USA | 1958 | > 1970 | M | |
Commonwealth Adding Machine Co. | - | USA | 1915 | - | M | - |
Compass Instrument and Optical Co. | - | USA | - | - | S | |
Compta | Stansa, Compta A. S. | NOR | < 1960 | > 1964 | M, E | - |
Comptator | Schubert & Salzer | GER | 1909 | - | M | - |
Comptograph | Industria Calcolatrici Scriventi S.p.A. | ITA | 1889 | - | M, E | - |
Comptometer | Feld and Tarrant | USA | 1885 | 1968 | M, E | - |
Concise Co., Ltd. | - | JAP | 1949 | - | S | |
Consul | Kovo | CZE | < 1958 | 1971 | E | - |
Contex | Brdr. Carlsen, Rex-Rotary | DAN | 1945 | 1975 | M, E | |
Contina AG | - | LIE | 1946 | 1970 | M | |
Continental | Wanderer Werke | GER | 1916 | 1949 | M, E | |
Continentale Büro-Reform (C.B.R.) | - | SWI | - | - | A | - |
Conto | Carl Landolt | SWI | 1910 | - | A | |
Contostyle | Aristlye, Goldman | USA | 1906 | - | M | - |
Controller Calculator KG | - | GER | - | - | S | |
Cordingley | - | UK | 1890 | - | A | - |
Cordt-Universal-Rechenmaschinenfabrik GmbH | - | GER | 1939 | - | ? | - |
Corema S.A. | - | SWI | < 1949 | 1955 | M | |
Corexa | Corema S.A. | SWI | 60's | - | M | |
Corona Typewriter Co. | - | USA | 1923 | > 1956 | M | |
Correntator | Unical, C.B.R. | SWI | 1925 | - | A | |
Cortina AG | - | LIE | - | - | M | - |
Cosmos Büromaschinen | - | GER | 1921 | - | M | - |
Countess | Bowler | UK | - | - | M | - |
Cram | - | USA | 1906 | - | M | - |
Cuhel, Franz | - | CZE | 1890 | - | M | - |
Curta | Cortina AG | LIE | 1948 | 1956 | M | - |
Curtec | - | FRA | - | - | S | - |
| D (53 brands) | - | - | - | - | - | - |
Da | - | BEL | 1952 | 1958 | M, A | - |
Dacometer | Dacorema, Rich. Müller A/S | DEN | 1947 | - | M | - |
Dacorema | - | DAN | 1901 | - | M | |
Dactyle | - | FRA | < 1897 | 1956 | M | |
Daemen, Schmidt & Co. | - | SWI | > 1910 | - | S | |
Dalton | Dalton Adding Machine Co. | USA | 1902 | 1956 | M, E | |
Damien, Maurice | - | FRA | > 1940 | - | S | - |
Danaddo | Danuvia Ipari és Kereskedelmi Rt. | HUN | 1949 | - | A | |
Danckwerts, Rudolf E.W. | - | ? | - | - | ? | - |
Dargue Brothers Ltd. | - | UK | <1910 | - | S | |
Davis Instruments Corp. | - | USA | - | - | S | |
De Boistissandeau, Hillerin | - | FRA | 1730 | - | M | - |
Deeva | - | IND | - | - | S | - |
Delta - Ozi SeisaKusho | - | JAP | - | - | S | - |
Demos | Theo Müggli | SWI | 1923 | - | M | |
Dempster, Jack | - | USA | < 1933 | - | S | |
Denise | - | ? | 1930 | 1960 | M | - |
Dennert & Pape | - | GER | - | - | S | |
Dennis | - | ? | 1908 | - | M | - |
Denominator Adding Machine Co. | - | USA | 1915 | 1925 | M | - |
Desjardins | - | FRA | - | - | S | - |
Desk Add-a-Matic | - | ? | 1950 | 1960 | M | - |
Deutsche Rechenmaschinen-Werke A.G. | - | GER | - | - | M | - |
Deutsche Telephonwerke und Kabelindustrie AG (DeTeWe) | - | GER | 1887 | 1958 | M | |
Devaux-Chevet (Baj) | - | FRA | - | - | S | - |
Dial-A-Matic | - | USA | - | - | A | - |
Diehl G.m.b.H. | - | GER | 1902 | 1959 | M, E | |
Diera | - | ? | 1906 | - | M | - |
Dietrich-Post Co. | - | USA | - | - | S | - |
Dietzgen (-> Eugene Dietzgen) | - | USA | 1887 | - | S | |
Digitrex | Heiwa Seimitsu Co., Ltd. | JAP | <1970 | - | E | - |
Dimm | - | ITA | - | - | M | - |
Direct | Theo Müggli (Moesch & Huber) | SWI | 1920 | 1937 | M, E | - |
Disney, Walt | - | USA | - | - | A, S | |
Diwa Manufacturing Co. | Diwa Manufacturing Company | DAN | - | - | S | |
Dixi | Dixma A.B. | SWE | 1940 | 1963 | M, E | - |
Dixma A.B. | Addo | SWE | 1939 | 1964 | M, E | |
Donkin | - | UK | - | - | S | |
Dr. Albert Hauff | - | GER | 1910c | - | S | |
Ducati (Società Scientifica Radio Brevetti Ducati) | - | ITA | 1926 | - | M | |
Duco Adding Machine Co. | - | USA | 1914 | 1919 | M | - |
Duconta | Ducati | ITA | - | - | M | - |
Dudley | Numerograph Mfg. Co. | USA | - | - | M | - |
Dumesnil | - | FRA | - | - | S | - |
Duntley | Duntley Adding Machine Company | USA | 1908 | - | M | - |
Dupa | Aristo | USA | - | - | S | |
Duplex | Addimult | SWI | ~1940 | - | A | - |
Duplex Typewriter Co. | - | USA | 1895 | - | M | - |
Duschanek, Carl | - | GER | 1886 | - | M | - |
Duval | - | FRA | - | - | S | - |
Dux | Forum Schmidt | DAN | 1910 | - | M | - |
Dynamit AG | - | GER | 1945 | 1955 | M | - |
Dzerzhinsky-Mech.-Fabrik | - | RUS | - | - | ? | - |
| E (40 brands) | - | - | - | - | - | - |
Eagle | Relay/Ricoh | ? | - | - | S | - |
Ebmeyer, H.W. | - | GER | <1920 | - | A | |
Eckelman | - | GER | - | - | ? | - |
Eclair-Bureau | - | FRA | - | - | M | |
ECO BRA | Bayerische Reisszeugfabrik AG | GER | - | - | S | |
EDICA S.R.L. | - | ARG | - | - | ? | - |
Edmondson | Blakey, Emmot. and Company | USA | 1885 | - | M | - |
Edmund Gunter | - | UK | > 1700 | - | S | |
Educational Instruments, Inc. | - | USA | - | - | S | |
Educational Toy Manufacturing | The Educated Monkey | USA | - | - | ? | - |
Edwin Thacher | - | USA | 1872 | - | S | |
Efficience | - | BEL | 1934 | - | M | - |
Efzet | Produx | GER | - | - | A | - |
Egli AG | - | SWI | - | - | M, E | - |
Eichner | - | GER | <1961 | >1962 | E | - |
Eiko Business Machine | - | JAP | - | - | E | |
Electa S.A. | - | ITA | - | - | ? | - |
Electro Murus | - | ROM | - | - | M | - |
Elettro Meccanotecnica Italo Svizzera (Elmis) | Elmis S. ö. A. | ITA | < 1958 | 1959 | M | - |
Elite Saldiermaschine | - | GER | 1961 | - | E | |
Elliott-Fischer Co. | - | USA | 1910 | - | M | - |
Ellis | Halmcolm Ellis | USA | 1906 | 1925 | M, E | - |
ELMETECNIL | - | ITA | >1950 | - | ? | - |
Empire Pencil Co. | - | USA | - | - | S | |
Engineer's | - | JAP | - | - | S | |
Engineering Instruments | - | USA | - | - | S | |
Engineering Sales | - | USA | - | - | S | - |
Ensign Co. | - | USA | 1907 | - | M, E | |
EOS | - | SWI | 1929 | - | M | - |
Erste Glashütter Rechenmaschinenfabrik | - | GER | - | - | ? | - |
Esacta S.r.l. | - | ITA | 1953 | - | M | - |
Espera | - | ? | > 1950 | - | M | - |
Esser, Heinrich | - | GER | 1892 | - | A | - |
Eugene Dietzgen Co. | - | USA | - | - | S | |
Eureka | - | ? | - | 1959 | E | - |
Everest | Officine Serio | ITA | 1932 | 1969 | E | |
Exact | Oliver Company | AUT | > 1910 | - | M | - |
Exacta | - | ? | - | - | A | - |
Exactus | Mini-Add | UK | > 1950 | - | A | |
Express | Otto Hübner | GER | 1928 | - | M | - |
| F (51 brands) | - | - | - | - | - | - |
F.A. Habereder & Co. | - | AUT | - | - | ? | - |
F.A.C.S.A. | - | ITA | >1930 | - | ? | - |
F.C. | - | FRA | - | - | S | - |
Fa. Adolf Bordt | - | GER | 1908 | - | M | - |
Fa. Paul Bruning | - | GER | 1938 | - | M | - |
Fabbrica Addizionatrice Italiana S.S. (FAI) | - | ITA | - | - | M, E | - |
Faber Castell | - | GER | 1905 | 1976 | A, S | |
FÃ bricia de Articulos Mecanicos para Oficina | - | SPA | - | - | ? | - |
Facini, Bernardo | - | ITA | 1714 | - | S | - |
Facit AB | - | SWE | 1918 | 1989 | M, E | |
FACSA | - | ITA | >1950 | - | ? | - |
Facta | Productor-Rechenmaschinenwerke, AB Advit. Industrier | SWE | < 1950 | 1957 | E | |
Facta-Rechenmaschinenwerk Leo Borger | - | GER | <1927 | - | M | |
Factory of Calculators and Typewriter of Shanghai | - | CHN | 1979 | - | E | - |
Famosa | - | SPA | 1958 | - | M | - |
FangYuan | - | CHN | - | - | S | |
Farmar, F.C. | - | UK | - | - | S | |
Favor-Ruhl | Charvos-Roos, Acu-Rule | USA | - | - | S | |
Favorit | Addimult | GER | > 1960 | - | A | - |
Fearns, Fearns Mear & Co. | - | UK | 1947 | > 1970 | S | |
Federal Adding Machine Corp. | - | USA | 1913 | - | M, E | - |
Fedra | VEB Mantissa | GER | - | - | S | |
FEDTRO Inc. | - | USA | 1960s | - | A | |
Feinmess Inst. J. Klawun | Addiator, Addimult | GER | - | - | S, A | |
Feliks | Mossredprom, Glavtochmash | RUS | 1900 | 1980 | M | |
Felsenthal Instrument Co. | - | USA | - | - | S | |
Felt and Tarrant Mfg Co. | - | USA | 1887 | - | M | |
Fernand Platiau | - | BEL | - | - | S | |
Ferrari Statistische Maschinen und Geräte | - | GER | < 1960 | - | S | |
Festus Mfg. Co. | - | USA | 1938 | 1972 | S | |
Figurator | Ray Adding Machine Company | USA | 1905 | - | M | - |
Filotecnica Salmoiraghi | - | ITA | 1864 | - | S | |
Fischer | - | GER | - | - | S | |
Fischer & Pöthig | - | GER | - | - | M | |
Flying Fish | - | CHN | 1979 | - | M, S | |
Fortuna-Werk VEB | - | GER | <1930 | - | M | |
Forum Schmidt | - | DAN | 1910 | - | M | |
Fossa-Mancini, Carlo | - | ITA | 1893 | - | A | - |
Fournier-Mang | - | FRA | 1919 | - | M | - |
Fowler & Co. | - | UK | < 1908 | 1988 | S | |
Fowler Adding Machine Co. | - | USA | 1863 | - | A | - |
Francia | Le Girondin | FRA | 1948 | 1960 | M | - |
Franz Hübl Metallwarenfabrik | - | GER | - | - | ? | - |
Frederick Post | - | GER | - | - | S | - |
Friden Calculating Machine Co. | - | USA | 1934 | 1975 | M, E | |
Friedmann | - | GER | - | - | S | |
Froude | - | UK | - | - | S | |
Fuji | - | JAP | - | - | S | |
Fuller Calculator | W.F. Stanley & Co. | UK | - | - | S | - |
Fullerton-Acu | - | USA | - | - | S | |
Funke, Joseph | - | GER | 1920c | - | A | |
| G (47 brands) | - | - | - | - | - | - |
G. Coradi | - | SWI | - | - | S | |
Gab-Ka | Zephir | FRA | 1906 | - | M | - |
Gamma | - | HUN | - | - | S | |
Gardner Calculator Co. | - | USA | < 1928 | 1937 | M | - |
Gauss | Hamann | GER | 1905 | - | M | - |
General-Gilbert Co. | - | USA | - | - | ? | - |
Geobra Brandstätter | - | GER | 1867 | - | A | |
Georg Bloch | - | GER | < 1919 | - | A | |
Geotec | by SUN | ? | - | - | S | |
Gerber Scientific Instrument Co. | - | USA | - | - | S | |
Gersten | - | GER | 1735 | - | M | - |
Gesellschaft für Maschinenbau und Elektrische Neuheiten | - | GER | - | - | E | - |
Gesellschaft fur Präzionstechnik G.m.b.H. | - | GER | - | - | A | - |
Gilson Slide Rule Co. | - | USA | 1915 | > 1975 | A, S | |
Gisholt Machine Co. | - | USA | - | - | S | |
Giuseppe Inzadi Milano (GIM) | - | ITA | 1939 | > 1947 | M | |
Globemaster | - | USA | - | - | S | |
Globus | Otto Rübner | GER | 1928 | - | M | - |
GNT Automatic A/S (IME peripherics) | - | DAN | 1969 | - | E | - |
Gobel Multiplying Bookkeeping Machine Co. | - | USA | < 1925 | - | M | - |
Goldberg | - | ? | 1905 | - | M | - |
Golden Gem | Automatic Adding Machine Co. | USA | 1904 | 1925 | M | - |
Goldman | - | USA | 1906 | - | A | - |
Goldschmidt, J. | - | FRA | 1906 | - | M | - |
Gong Se He Ying | - | CHN | - | - | S | |
Gonnella, Tito | - | ITA | 1859 | - | A | - |
Goron | - | FRA | 1958 | - | M | - |
Görz | Optische Antstalt C.P. Goerz A.G. | GER | < 1907 | 1929 | A | |
Gosremprom | - | RUS | < 1932 | - | M | |
GOST | - | RUS | - | - | S | - |
Graber Calculating Machine | - | USA | 1895 | 1905 | A | - |
Gräber, Joseph | - | AUT | 1903 | - | M | - |
Grant, George B. | - | USA | 1877 | - | M | - |
Graphic Calculator Co | - | USA | - | - | S | |
Graphoplex | - | FRA | - | - | S | |
Gravet Lenoir | - | FRA | - | - | S | |
Gray Arithmometer Corp. | - | USA | - | - | A | - |
Greif | Gesellschaft für Maschinenbau | GER | 1908 | - | M | - |
Griffin Computors | - | AUS | - | - | S | |
Grillet | - | FRA | 1678 | - | A | - |
Grimme, Natalis & Co., AG | - | GER | 1871 | - | M | |
Groesbeck Calculating Machine | Ziegler and McCudry | USA | 1870 | - | M | - |
Guedon | - | USA | - | - | S | |
Guinigi, Niccola | - | ITA | 1859 | - | A | - |
Gunter, Edmond | - | UK | > 1800 | - | S | - |
Gutschow & Company G.m.b.H. | - | GER | - | - | ? | - |
Guy´s Calculating Machines Ltd. | - | UK | - | - | M | - |
| H (48 brands) | - | - | - | - | - | - |
H. Oehlmann & Co. | - | GER | - | - | ? | - |
HABS | - | SPA | - | - | A | |
Hachette | - | FRA | 1852 | - | S | |
Hahn, Phillip Matthäus | - | GER | 1774 | - | A | - |
Halden, Joseph | - | UK | - | - | S | - |
Hallmark | Puretec Inc., Tokyo Electric Co. | JAP | > 1950 | - | E | - |
Hamann | DeTeWe/Hamann-Rechenmaschinen GmbH | GER | 1958 | - | M | - |
Hamann Mathematisch-mechanisches Institut | - | GER | 1896 | 1916 | A | |
Hamann-Manus | - | GER | 1925 | 1970 | M, E | |
Hammenstede | - | GER | 1882 | - | M | - |
Hannovera Rechenmaschinenfabrik | - | GER | 1921 | 1956 | M | |
Hannyngton, John Caufield | - | UK | - | - | S | |
Hansa-Technik GmbH | - | GER | - | - | S | - |
Hanseatic | - | ? | > 1950 | - | E | - |
Harmon | - | ? | - | 1925 | M | - |
Hart, William | - | USA | 1878 | - | M | - |
Hasbro | - | USA | - | - | A | - |
Hayes | - | ? | - | - | M | - |
Hebecker & Taetzel | - | GER | 1954 | - | M | - |
Heinitz, Woldemar | - | GER | - | - | M | |
Heiwa Seimitsu Co., Ltd. | - | JAP | 70's | - | E | - |
Helios | - | ? | - | - | M | - |
Helix | - | UK | - | - | S | |
Hellerman | - | DAN | - | - | S | - |
Hellström, J.F. | - | SWE | 1879 | - | A | - |
Hemmi Jirou & Co. | - | JAP | 1895 | 1973 | S | |
Henschel | - | USA | - | - | S | |
Hermes | - | GER | 1911 | > 1945 | M | - |
Herring Computing Machine | - | USA | 1918 | - | M | - |
Heureka | A.G. für Techn. Industrie | SWI | 1907 | - | M | |
Hewig | - | USA | - | - | A | - |
Hexco Inc. | - | USA | <1968 | - | A | |
HH Universum | - | GER | - | - | S | |
Hiett | - | USA | 1897 | 1903 | M | - |
Hill, T. | - | USA | 1857 | - | M | - |
Hiltra | - | JAP | - | - | A | - |
Hispano-Olivetti | - | SPA | 50's | - | M | - |
Högfors | - | SWE | 1930 | - | M | - |
Holland, J.S. | - | UK | 1835 | - | M | - |
Holman Engineering Works | - | UK | - | - | A | |
Hono | - | JAP | - | - | S | |
Hono-Rietz | Graphoplex | ITA | - | - | S | - |
Hope | - | JAP | - | > 1970 | S | |
Howitzer | - | USA | > 1952 | - | S | |
Hüber, Robert | - | GER | - | - | ? | - |
Hübner, Otto | - | GER | - | - | M | - |
Huet | - | FRA | - | - | S | |
Hughes-Owens (H-O) | SUN, Hemmi | CAN | - | - | S | |
| I (15 brands) | - | - | - | - | - | - |
Ichida | - | JAP | <1962 | - | A | |
Imperial | - | ? | - | 1970 | E | - |
Indeco | - | USA | - | - | S | |
Industria Calcolatrici Scriventi S.p.A. | - | ITA | 1936 | 1958 | M, E | |
Industria Calculadores Espanolas S.L. | - | SPA | - | - | M | - |
Industria Macchine Calcolatrici (IMCA) | - | ITA | 1957 | 1964 | M | |
Ing. C. Olivetti & C. | - | ITA | 1908 | act. | M, E | |
Innovation | - | CHN | - | - | S | - |
International Business Machines (IBM) | - | USA | - | - | A | - |
International Money Machine Co. | - | USA | 1910 | - | M, E | - |
Intra | - | JAP | - | - | S | |
Invicta S.A. | - | ITA | >1930 | - | ? | - |
Inzadi | FAI | ITA | 1950 ? | 1972 | M, E | - |
Iris | - | SPA | 1955 | - | M | - |
IWA (Rechenschieberfabrik F. Riehle GmbH) | - | GER | 1926 | > 1971 | S | |
| J (17 brands) | - | - | - | - | - | - |
J. E. Boyer Comp. | - | USA | - | - | ? | - |
J.H. Bassett Co. | - | USA | 1900 | 1920 | A | |
Jaguar | Maruzen | JAP | > 1960 | - | M | - |
Jakar | - | UK | - | - | S | |
Jakobson | - | ? | 1770 | - | A | - |
JAM | - | ARG | - | - | S | |
Jammot | - | FRA | - | - | M | - |
Japy Frères | - | FRA | 1958 | 1975 | M, E | - |
Jason | Relay/Ricoh | USA | - | - | S | |
Jeppesen | - | USA | < 1955 | - | S | |
Jion | Lic. Walther | MEX | 1953 | - | M | |
John Davis & Son | - | UK | - | - | S | |
John I. Easterly Mfg. | - | USA | - | - | S | - |
Jomard | - | FRA | - | - | S | - |
Jordan, Ben | - | AUS | - | - | S | |
Joseph Kopfer & Sohne | - | GER | 1867 | - | M | |
Justin Bamberger Wm. & Co. | - | GER | < 1902 | - | A | |
| K (37 brands) | - | - | - | - | - | - |
K. B. | - | FRA | - | - | ? | |
Karl-Wess | - | GER | - | - | S | |
Kel-Co | - | USA | - | - | S | - |
Kel-San Manufacturing Co. | - | USA | <1930 | - | M | |
Keller & Knappich GmbH | - | GER | 1958< | - | M | |
Ken-Add Machines Co. | - | USA | > 1950 | - | A | |
Kent | - | HOL | - | - | S | |
Kepler | - | ARG | - | - | S | - |
Kern & Co. | - | SWI | - | - | S | |
Kes-Add | Kesling | USA | - | - | A | |
Keuffel & Esser | - | GER | - | - | S | - |
Keuffel & Esser Co. (K+E) | - | USA | 1867 | 1976 | A, S | |
KG Ing. Reisser & Reder | - | AUT | - | - | M | |
Kienzle Apparate G.m.b.H. | - | GER | 1883 | 1981 | E | |
Kingson | - | HON | 1960 | 1970 | A, S, M | |
Kingston | - | ? | - | - | A | - |
Kirja | - | RUS | > 1920 | - | M | |
Kiser | - | FRA | - | - | S | - |
Klaczko | - | LET | 1913 | - | M | - |
Klein & Setter | - | GER | - | - | M | |
Kling | Calcorex | ? | - | - | M | - |
Knudsen & Bommen (-> ADDO) | - | NOR | - | - | M | |
Koch, Huxhold & Hannemann (KHH) | - | GER | - | - | S | |
Koh-I-Noor | - | FRA | - | - | S | |
Kohler | - | ? | 1835 | - | M | - |
Kollektor | Württembergische Uhrenfabrik Bürk Söhne | GER | 1910 | - | M | - |
Komet-Rechenmaschinen Fabrik | - | GER | 1951 | 1958 | M | |
Korean | - | ? | - | - | S | - |
Kosmos | British Calculators Ltd. | UK | 1908 | - | M | - |
Kramer, Otto | - | GER | - | - | M | - |
Krüger | - | GER | 1909 | - | B (M) | |
Kübler, Carl | - | GER | 1919 | - | A | |
Kübler, H.W. | - | GER | - | - | A | - |
Kuhrt | Deutsche Rechenmaschinen-Werke A.G. | GER | 1923 | - | M | - |
Kuli | Pallweber and Bordt | GER | 1909 | - | M | |
Kutsuwa | - | JAP | - | - | S | |
Kvasnicka | - | CZE | - | - | S | |
| L (45 brands) | - | - | - | - | - | - |
Lafay | - | FRA | - | - | S | |
Lafayette | Relay/Ricoh | USA | - | - | S | |
Lafond | - | FRA | 1909 | - | M | - |
Lagomarsino S.p.A. | - | ITA | 1896 | - | E | |
Lakeside | Engineering Instruments | USA | - | - | S | |
Lallemand | - | FRA | - | - | S | - |
Landin | - | USA | 1891 | - | A | - |
Landolt, Carl | - | SWI | - | - | ? | - |
Lanston Monotype Machine Co. | - | USA | 1887 | 1998 | E | |
Lawrence Engineering Service | - | USA | < 1935 | 1967 | S | |
Layton | - | UK | 1883 | - | M | - |
LC Smith & Corona Inc. | - | USA | - | 1962 | M | - |
Le Girondin | - | FRA | - | - | A | |
Lehigh | - | USA | 1919 | - | M | - |
Lehmann | - | GER | 1946 | 1949 | B (M) | |
Leib Stern | - | RUS | 1947 | - | S | |
Leibniz, G.W. | - | GER | 1672 | - | M | - |
Leiner | - | ? | 1878 | - | M | - |
Leningrad | N.K.T.P. | RUS | 1930 | - | M, S | - |
Lenoir | - | FRA | 1825 | - | S | |
Lenoir-Gravet | - | FRA | - | - | S | - |
Lepine | - | FRA | 1725 | - | A | - |
Leupold | - | GER | 1727 | - | M | - |
Lien, Jörgen S. | - | NOR | - | - | ? | - |
Lietz | The A. Lietz Co. | USA | - | - | S | |
Lightning Calculator | - | USA | 1908 | - | M | - |
Lindholm, P.T. | - | USA | 1886 | - | M | - |
Lipsia | Otto Holzapfel und Cie. | GER | 1914 | 1935 | M | |
LIPSIA Rechnenmaschinen-Fabrik | - | GER | - | - | ? | - |
Little Adding Wonder | The Wonder Adding MFGRS | USA | < 1915 | - | M | |
Little Giant | - | USA | 1924 | - | M | - |
Litton Industries | - | USA | > 1950 | - | M | - |
Locke Mfg. Co. | - | USA | 1901 | 1905 | A | |
Locke-Brunhuber | - | GER | 1939 | - | M | |
Loga-Calculator A.G. | - | SWI | 1911 | act. | S | |
Logarecta | - | BEL | - | - | S | |
Logarex | - | CZE | - | - | S | |
Logarithmus | - | ? | 1914 | - | M | - |
London Office Machines Ltd. | - | UK | - | - | ? | - |
Lotos Flower | - | CHN | - | - | M | |
Ludlum, A.C. | - | USA | 1888 | - | M | |
Ludwig Spitz & Co. | - | GER | 1907 | - | M | |
Lugagne | - | FRA | - | - | S | - |
Luini | - | ITA | >1950 | - | ? | - |
Lutz | - | JAP | - | - | S | |
| M (85 brands) | - | - | - | - | - | - |
M. M. Smith and F. W. Potts | - | USA | 1876< | - | ? | - |
M.U.S.A. | - | ITA | >1930 | - | ? | - |
Machines à calculer Raymond | - | FRA | 1935 | - | A | - |
Madas | Egli AG | SWI | 1908 | 1968 | M, E | |
Madator | - | UK | <1905 | - | M | |
Madix | - | GER | - | - | M | |
Magic Brain | Chadwick | ? | 1950 | 1975 | M, A | |
Mahn, Rudolf | - | GER | 1887 | - | M | - |
Mahon | - | UK | 1775 | - | M | - |
Make | - | ? | - | - | M, E | - |
Mallman Addograph Mfg. Co. | - | USA | 1903 | 1916 | M | - |
Marc | Unis | FRA | - | - | S | |
Marcantoni / Telettra | - | ITA | - | - | S | - |
Marchant | - | USA | 1911 | 1971 | M, E | |
Marini | - | ITA | - | - | S | - |
Mark | Triumph | JAP | - | - | E | - |
Marston | - | UK | 1842 | - | S | - |
Maruzen Sewing Machine Co. Ltd. | - | JAP | 1938 | - | M | - |
Maschinenanstalt Odhner & Hill | - | SWE | <1890 | - | M | |
Maschinenbau Koch | - | GER | - | - | M | - |
Maschinenfabrik W. T. Odhner | - | RUS | - | - | M | |
Mascot | - | USA | - | - | S | - |
Master | - | BEL | > 1921 | > 1937 | A | |
Master Electric | - | USA | - | - | S | - |
Matador | - | ? | 1905 | - | M | - |
Mathematicus | - | ? | - | - | S | - |
Mathias Bäuerle GmbH | - | GER | 1863 | - | M | - |
Mathieu & Lefèvre | - | FRA | - | - | S | - |
Matson | - | FRA | - | - | A | - |
Mauch, Julius H. | - | SWI | <1926 | - | A | |
Mauser-Werke AG | - | GER | > 1931 | 1964 | M, E | |
MBC | - | JAP | - | - | A | |
McCaskey Register Co. | - | USA | 1919 | 1920 | M | - |
Mead | - | JAP | - | - | S | - |
Mecanica Modern A.S.A. | - | MEX | - | - | ? | - |
Mechanical Accounting Co. | - | USA | 1900 | 1925 | M | - |
Mechanitscheski Sawod Dserschinskowo | - | RUS | 1921 | 1941 | M | |
Meissner | - | GER | - | - | S | |
Melitta | VEB Ernst Thälmann | GER | 1925 | 1960 | M, E | |
Menriver | Industria Calculadores Espanolas S.L. | SPA | 1960 | - | M | - |
Merca | - | FIN | 1955 | - | E | - |
Mercantile Adding Machine Co. | - | USA | 1909 | - | M | - |
Mercedes | Büromaschinenwerke AG | GER | 1906 | - | M | |
Mercedes-Euklid | Mercedes Büromaschinenwerke | GER | 1905 | 1963 | M, E | - |
Merchant Calculating Machine Co. | - | USA | 1911 | - | M | - |
Mercur | - | SWE | 1909 | - | M | - |
Mesko | Zaklady Metalowe | POL | 1924 | - | M | |
Metal | - | ? | - | - | M | - |
Metrograph Corp. | - | USA | - | - | A | - |
Meyrat & Perdeizet | - | FRA | > 1880 | - | S | - |
Micronta | - | USA | - | - | S | |
Micronta | Relay/Ricoh | ? | - | - | S | - |
Midget Sales Co. | - | USA | 1910 | - | A | - |
Miller Dial | - | USA | - | - | S | |
Millionär | Egli AG | SWI | 1893 | 1925 | M | |
Minerva | - | ? | 1960 | 1970 | M | - |
Mini-Add | - | USA | - | - | A | - |
Mira Rechenmaschinen-Fabrik | - | CZE | 1924 | - | M | |
mjRooy | M.J. Rooy | FRA | 1940 | 1960 | M | - |
MLS | - | ? | - | 1964 | M, E | - |
Moesch & Huber | - | SWI | < 1920 | > 1955 | M | |
Molter, Whilelm | - | GER | - | - | S | |
Monarch | Remington Typewriter Co./Listing -Adding Machines | USA | 1925 | 1964 | M | |
Monopol-Duplex | Dresden Control Cash and Calculating Machine Factory | GER | 1894 | 1904 | M | - |
Monos AG | - | GER | 1923 | - | M | - |
Monroe Calculating Machine Co. | - | USA | 1912 | 1986 | M, E | |
Moon-Hopkins Billing Machine Co. | - | USA | 1912 | 1921 | M | |
Morat, Franz | - | GER | 1912 | - | M | |
Morin, H. | - | FRA | - | - | S | |
Morse Adding Machine Co. | - | USA | 1909 | - | M | - |
Morse Chain Co. | - | USA | <1920 | - | A | |
Mozzoni, Giuseppe | - | ITA | 1847 | - | A | - |
Muldivo | - | UK | 1912 | 1957 | M, E | |
Mulduvo | - | FRA | - | - | M | - |
Müller, Johann-Helfrich | - | GER | 1783 | - | A | |
Müller, Paul G. | - | GER | 1940 | 1960 | M | - |
Multator (-> Produx) | - | ? | - | - | M | - |
Multi-Divi AB | - | SWE | > 1920 | > 1940 | A | - |
Multi-Divo | - | ? | 1902 | - | M | |
Multical | - | GER | 1950 | - | M | - |
Multifix | - | NOR | 1948 | 1952 | M, E | - |
Multo A.B. | - | SWE | 1917 | 1957 | M | |
Multor | - | GER | - | - | S | - |
Mures | Electro Mures | POR | <1962 | - | M, E | |
Musina, Opprandino | - | ITA | 1867 | - | A | - |
| N (25 brands) | - | - | - | - | - | - |
N.K.T.P. | - | RUS | 1935 | - | M | - |
Nan-Hui | - | CHN | - | - | S | - |
National | NCR | ? | 1904 | 1962 | M, E | - |
National Cash Register (NCR) | - | USA | 1891 | 1974 | M | |
Neckermann (-> Chadwick) | - | ? | - | - | M | - |
Neolt | - | ITA | - | - | S | |
Neon | Stationery MFG. Co. | UK | - | - | A | - |
Nestler | - | GER | 1935 | - | S | |
New Standard Adding Machine Co. | - | USA | - | - | M | |
NFI | Dynamit AG | GER | 1948 | 1954 | M | - |
Nico Sanders | - | FRA | 1912 | - | M | - |
Nikkei | - | JAP | - | - | S | - |
Nippon Calculating Machine Co., Ltd. (NCM) | - | JAP | 1945 | - | M | - |
Nisa | Nisa Kalkulacni, Kovo | CZE | 1950 | 1968 | M | |
Nobema | - | UK | - | - | S | |
Norden | - | SWE | - | - | S | - |
Nordhammer Rechnenmaschine AG | - | GER | - | - | A | - |
Norma | - | GER | - | - | S | |
Normus | - | SWI | - | - | S | |
Northrop Wilcox | - | ? | - | - | S | - |
Norton & Gregory | - | UK | - | - | S | |
Novotni | - | USA | - | - | S | - |
Numeria | SICMU, Lagomarsino | ITA | 1940 | 1969 | M | |
Numerograph Mfg. Co. | - | USA | 1896 | - | M | - |
Nürnberg-Fürther Industriewerk (NFI) | - | GER | > 1950 | - | M | - |
| O (28 brands) | - | - | - | - | - | - |
O.K.E | - | ARG | - | - | S | - |
OAO Kalibr | - | RUS | - | - | S | |
ODELCO | SUN | ? | - | - | S | |
Odhner | - | SWE | 1874 | 1973 | M, E | |
Oerlikon-Bührle & Co. | - | SWI | 1906 | act. | E | - |
Ohmoto Tekko | - | JAP | <1923 | - | M | |
Oliver Co. | - | AUT | - | - | M | - |
Olivetti Industria | - | ARG | - | - | M | - |
Olpimatic | - | GER | 50's | - | M | - |
Olson | Relay/Ricoh | USA | - | - | S | |
Olympe | - | ? | - | - | M | - |
Olympi | Olympia-Werke AG | GER | 1948 | act. | M, E | |
OMARO | - | FRA | - | - | S | |
Omega | Wescosa | USA | - | - | A | - |
Omega | Relay/Ricoh | USA | - | - | S | |
Optima | - | GER | 1910 | - | M | - |
Optische Antstalt C.P. Goerz A.G. | - | GER | - | - | A | - |
Optischen Maschinenbaum-Industrie AG (OMIAG) | - | GER | 1924 | - | M, S | - |
Orga AG | - | GER | 1920 | - | M | - |
Orga-Constant | Maschinenbau Koch | GER | 1921 | - | M | - |
Oriette | - | ? | 1957 | 1959 | M | - |
Orlin | - | ? | 1892 | - | M | - |
Otis King | Carbic, Ltd. | UK | < 1940 | > 1950 | S | |
Ott, Max | - | GER | - | - | ? | - |
Otto Holzapfel und Cie. | - | GER | 1914 | 1953 | M | |
Otto Meuter & Sohn | - | GER | 1928 | 1973 | A | |
Oxner Rechnemaschinen-Fabrik | - | SWI | - | 1951 | M | - |
Ozone | - | ? | - | - | S | - |
| P (55 brands) | - | - | - | - | - | - |
Pablo Huc | - | SPA | - | - | M | - |
Palagi Palmarini, Luigi | - | ITA | 1829 | - | A | - |
Paleo | Relay/Ricoh | ? | - | - | S | - |
Pangborn Adding Machine | - | USA | 1908 | - | M | - |
Parmelee, D.D. | - | USA | 1850 | - | M | - |
Pascal | - | FRA | 1642 | - | M | - |
Payen | - | ? | - | - | M | - |
Pearl Engraving Co. | - | USA | - | - | A | |
Pebalia | - | CZE | 1908 | - | M | - |
Peerless | Mathias Bäuerle | GER | 1904 | 1947 | M | - |
Pefect | - | ? | - | - | A | - |
Peghetti-Corsini S.p.A. | - | ITA | >1950 | - | ? | - |
Perag Adsu | - | GER | 1948 | - | M | - |
Pereire | - | ? | 1750 | - | A | - |
Perrault | - | FRA | 1700 | - | A | - |
Perrygraf | - | USA | - | - | S | |
Peter Pan | Wolverine | USA | - | - | M | - |
Peters-Morse Mfg. Co. | - | USA | 1922 | 1956 | M | - |
Petersson | - | NOR | 1873 | - | M | - |
Petters Ltd. | - | UK | <1923 | - | M | |
Phönix Bureaumaschinenwerke | - | GER | 1914 | - | M | - |
PHuc | Pablo Huc | SPA | 1948 | - | M | - |
PIC (-> The Precision Instrument Co.) | - | USA | - | - | S | - |
Piccolo | - | ? | 1960 | > 1972 | A | - |
Pickett & Eckel | - | USA | - | - | S | |
Pickett (Relay/Ricoh) | Relay/Ricoh | USA | 1943 | 1975 | S | |
Picma | Le Girondin | ? | - | - | A | - |
Pike Adding Machine Co. | - | USA | 1904 | 1909 | M | - |
Pilot Business Machines | - | JAP | 1961 | 1969 | M | - |
Piquet, Belotte, Manill | Le Girondin | FRA | - | - | A | - |
Planet | - | ? | - | - | M | |
Plastograf | - | BRA | - | - | S | |
Platt | - | UK | - | - | S | |
Plus | Petters Ltd., Bell-Puch | UK | 1931 | 1972 | M, E | |
Pocket Adding Machine (-> Omega) | - | ? | - | 1925 | M | - |
Poleni, Giovanni | - | ITA | 1709 | - | M | - |
Polynom Rechnenmaschine-Fabrik | - | GER | - | - | A | - |
Portable Adding Machine Sales Co. | - | USA | 1923 | 1925 | M | - |
Post | Hemmi | USA | 1921 | - | S | |
Pöthig, Rheinhold | - | GER | - | - | M | - |
Pottin | - | ? | 1885 | - | M | - |
Pozzi S.p.A. | - | ITA | 1911 | - | S | - |
Präzisionstechnik - Elektrotechnik u. Radio Gesellschaft (PE | - | GER | - | - | M | |
Precisa | - | SWI | 1935 | > 1967 | M, E | |
Precisa-Hermes | - | GER | > 1960 | 1969 | M | |
Precise | - | ? | - | - | M | - |
Precision Adding Machine Co. | - | USA | 1924 | - | M | - |
Predom-Mesko | - | POL | 1924 | - | M | - |
Prestige | - | ? | - | - | S | - |
Princess-Saldi | Knepper & Knappich GmbH | GER | < 1958 | 1959 | E | - |
Pro Calculo (by Addiator, Otto Meuter) | - | ? | > 1914 | - | A | |
Procento | Ungarische Rechnen- und Screibmaschinenfabrik AG | HUN | 1912 | - | M | - |
Productor-Rechenmaschinenwerke | - | AUT | - | - | M | - |
Produx | Otto Meuter | GER | 1928 | 1972 | M, E, A | - |
PSIC | - | ITA | >1930 | - | ? | - |
| Q (5 brands) | - | - | - | - | - | - |
Qualitechnic (Mercura) | - | FRA | - | - | S | |
Quentell | - | USA | - | 1925 | M | - |
Quick | Willy Feiler | GER | < 1961 | > 1963 | E | - |
Quick-Add | - | ? | 1952 | 1975 | M, E | - |
Quixsum | - | USA | 1924 | - | M | - |
| R (57 brands) | - | - | - | - | - | - |
R.C. Allen Businesss Machines | - | USA | 1932 | > 1950 | M | |
Raffy | - | FRA | - | - | S | - |
Rallymat | - | ? | > 1950 | - | E | - |
Ramsayer (Technischen Hochschule Stuttgart) | - | GER | 1955 | - | M | |
Rapid Calculator | Allen Wales | USA | 1923 | 1927 | M | - |
Rapid Calculators Co. | - | USA | - | - | A | - |
Rapid Computer Adding Machine | - | USA | 1893 | - | M | - |
Ratcliffe | - | UK | - | - | S | |
Ray Adding Machine | - | USA | 1905 | 1924 | A | - |
Ray Calculator Co. | - | USA | <1960 | - | A | |
Ray Subtractor-Adder Co. | - | USA | 1916 | 1917 | A | - |
Rechenmaschinenwerk Herzstark & Co. | - | AUT | 1908 | 1925 | M | |
Rechnenmaschine Gesellschaft | - | GER | - | - | M | - |
Record | Nordhammer Rechnenmaschine, Meuter | GER | 1913 | 1956 | A | |
Recta | - | ? | - | - | M | - |
Regent-Feinbau | - | GER | < 1949 | - | M | |
Regina | Hebecker & Taetzel | GER | 1925 | 1968 | M, E | |
REGINA-Rechenmaschinen Heinrich Holz | - | GER | - | - | M | - |
Regna | - | ? | - | - | M | - |
Reiss | - | GER | - | - | S | |
Relay | - | JAP | - | - | S | |
Relay/Ricoh | - | JAP | - | - | S | - |
Reliable Typewriter & Adding Machine Corp. (RTAM) | - | USA | 1927 | 1950 | A | - |
Rema | Braunschweig Rechnenmaschine-Fabrik Rema | GER | 1915 | 1956 | M | - |
Remington | - | USA | - | - | M, E | - |
Remington-Rand | - | USA | 1927 | 1932 | M, E | |
Renown | - | ? | - | - | ? | - |
Reports | - | ? | 1950 | - | M | - |
Result | - | ? | 40's | - | M | - |
Resulta | Paul Brüning | GER | 1911 | 1967 | M, E | |
Rex-Rotary Int. Comp. A/S | - | DAN | - | - | M, E | - |
Reybaud (RéBo) | - | FRA | 1925 | 1930 | A | - |
Rhei-Ta | - | ? | - | - | S | |
Rheinische Metallwaren- und Maschinenfabrik Sömmerda AG | - | GER | 1928 | - | M | |
Rheinmetall GmbH | - | GER | 1924 | 1965 | M, E | |
Richard Müller A/S | - | DAN | <1950 | - | M | |
Richardson (Geo. Richardson) | - | USA | - | - | S | |
Richer | - | FRA | 1874 | - | S | |
Ricoh Company Ltd. | - | JAP | < 1960 | > 1984 | E, S | |
Rista | - | GER | - | - | S | |
RIV Officine di Villar Perosa | - | ITA | 1906 | 1961 | M | |
Robert Kling GmbH | - | GER | 1918 | 1975 | M | |
Robinson | - | ? | - | 1925 | M | - |
Robjohn, W. | - | USA | 1872 | - | M | - |
Rokli | Robert Kling GmbH | GER | 1949 | 1975 | M, E | - |
Rolls Record | - | ? | - | - | S, A | - |
Romana | - | ? | 1939 | - | M | - |
Romanian | - | ? | - | - | S | - |
Romanoni | - | ITA | <1958 | - | M | |
Roos | - | USA | - | - | S | - |
Roth, Didier | - | FRA | 1841 | - | M | - |
Royal | Ushida Yoko Co. Ltd. | JAP | - | - | S | |
Royal | Litton | UK | - | - | M | - |
Royal McBee Corp. | - | USA | - | - | M | - |
Rudolf Schweizer & Cie. | - | SWI | 1936< | - | M | |
Runge, Ed. | - | GER | 1896 | - | A | - |
Ruthardt & Co. G.m.b.H. | - | GER | <1927 | - | M | |
| S (126 brands) | - | - | - | - | - | - |
S. & N. (SUN) (-> Seidel & Naumann) | - | GER | 1910 | - | M | - |
S.A. Sozzi-Inzadi | - | ITA | - | - | M | - |
S.P.A. Euclid | - | ITA | 1950 | - | M | - |
Sabielny, Hans | - | GER | - | - | M | - |
Safetech | - | USA | - | - | S | |
Saldorita | - | SWE | 1937 | - | M | - |
Saldoritaverken | - | SWE | <1937 | - | M | |
Sam Morland | - | UK | 1666 | - | A | - |
SAMAS | - | ITA | >1950 | - | ? | - |
Samostchoty | - | RUS | 1867 | - | M | - |
Samuel Downing | - | UK | 1833 | - | M | - |
Sander | - | SIN | > 1950 | - | M | - |
Sanders | Société Industrielle des Téléphones | ? | 1912 | - | M | - |
Sans & Streiffe | Relay/Ricoh | USA | - | - | S | |
Saxonia | Vereinigte Glashütter Rechenmaschinenfabriken | GER | 1895 | 1925 | M | |
Scheich, F. | - | ? | 1920 | 1960 | M | - |
Scheutz, Per Georg | - | SWE | 1837 | - | M | |
Schickard | - | GER | 1623 | - | M | - |
Schilt | - | UK | 1851 | - | M | - |
Schneider Rechenapparatefabrik | - | GER | < 1909 | - | A, S | |
Schooling | The Calculating and Engineering Co. | UK | 1912 | - | M | - |
Schubert & Co. | - | GER | 1938 | > 1974 | M, E | |
Schubert und Rother | - | GER | - | - | M | - |
Schuster, Ernst | - | GER | 1901 | 1907 | M | - |
Schuster, Johann Christoph | - | GER | 1792 | - | A | - |
Science Spectrum, Inc. | - | USA | - | - | S | |
Scientific Instruments Co. (SIC) (SINCO) | - | USA | < 1961 | > 1964 | S | |
Scribola | Ruthardt & Co. | GER | 1922 | - | M | - |
Sears, Roebuck and Co. | - | USA | 1886 | - | A | - |
Seehase, Dr. Ing. | - | GER | - | - | S | |
Seidel & Naumann (S & N, SUN) | - | GER | 1870 | - | M | |
Select | - | FRA | 1959 | - | M | - |
Selling | - | GER | 1886 | - | M | - |
Serio Officine Meccaniche di Precisione SA | - | ITA | 1932 | 1969 | M, E | |
Service Slide Rules | - | AUS | - | - | S | |
Service Studios | - | AUS | 1943 | - | S | |
Shanghai Calculator | - | CHN | - | - | M | |
Shanghai Ding Feng | - | CHN | - | - | S | |
Shanghai Si Da | - | CHN | - | - | S | |
Shohe Zanaka | - | ? | 1893 | - | M | - |
Shop-n-Add | Giftcraft Inc. | USA | - | - | A | - |
Siegfried Link GmbH & Co. KG | - | GER | - | - | ? | - |
Sigma | SACMA | ITA | 1951 | 1954 | M | |
Simeca S.A. | - | SWI | < 1958 | > 1962 | E | |
Simplon | Dargue Bros. | UK | <1934 | - | S | |
Sirius | Sirius-Werk | GER | 1912 | - | M | - |
Skala | - | POL | - | - | S | |
Skyline | Relay/Ricoh | USA | - | - | S | |
Slide Chart of Autralia (SCA) | - | AUS | - | - | S | |
Slide Rule & Scale Engineering Co (SR & SECO) | - | USA | - | - | S | |
Small, G. | - | USA | 1918 | - | S, A | |
Smallwood | - | USA | - | - | A | - |
Smith, B.F. | - | USA | 1881 | - | M | - |
Smith, W.H. | - | UK | - | - | S | |
Smith-Corona-Marchant | Hamann | USA | - | - | E | - |
Società Anonima Costruzioni Meccaniche e Affini (SACMA) | - | ITA | 1948 | - | M | - |
Società Anonima Macchine Addizionatrici e Contabili (SAMAC) | - | ITA | <1951 | - | - | |
Società Italiana Commercio Macchine Ufficio (SICMU) | - | ITA | - | - | M | - |
Società Italiana Macchine Aziendali Stiatti (SIMAS) | - | ITA | > 1930 | - | M | |
Societé Industrielle des Métaux Manufacturés S.A. (SIMEX) | - | SWI | > 1950 | - | M | - |
Societé Industrielle des Telephones | - | FRA | 1912 | - | M | - |
Soemtron | VEB Büromaschinenwerk Sömmerda | GER | < 1962 | > 1969 | M, E | |
Sohe Tanaka | - | JAP | 1893 | - | A | - |
Soll & Haben | - | GER | 1907 | - | A | - |
Solo Calculating Machine Co Ltd. | - | JAP | 1960 | 1980 | M | - |
Soviet-Factory#10 | - | RUS | - | - | S | |
Soviet-KLPZ | - | RUS | - | - | S | |
Soviet-LFAI | - | RUS | - | - | S | |
Soviet-LSLD | - | RUS | - | - | S | |
Soviet-LSLO | - | RUS | - | - | S | |
Soviet-Ramenskoye | - | RUS | - | - | S | - |
Soviet-SPZ | - | RUS | - | - | S | |
Soviet-STP VMP | - | RUS | - | - | S | |
Soviet-TU | - | RUS | - | - | S | - |
Soviet-UGK | - | RUS | - | - | S | |
Sozzi Angelo & Co. | - | ITA | - | - | E | |
Spalding, C.G. | - | USA | 1884 | - | M | - |
Speedee | - | ? | - | - | M | - |
Sperry | Keuffel & Essert | USA | - | - | S | |
Spezial | - | GER | 1925 | - | M | - |
Staedtler | - | GER | - | - | S | |
Staffel, J.A. | - | POL | 1845 | - | M | - |
Standard Adding Machine Co. | - | USA | 1903 | 1910 | M | - |
Standardgraph | - | GER | - | - | S | |
Standardwerk Eugen Reis GmbH | - | GER | <1949 | - | A | |
Stanhope, Charles | - | UK | 1775 | - | M | |
Stanley | - | UK | - | - | S | |
Stansa (Den Norske Stansefabrik A/S) | - | NOR | - | - | M, E | |
Star | Accounting Machine Company Inc. | USA | 1922 | - | M | - |
STAR | - | JAP | - | - | S | - |
Stark, A. | - | USA | 1884 | - | M | - |
Stchoty | - | RUS | - | - | B (M) | |
Steiner | - | ITA | >1950 | - | ? | - |
Steinmann, Albert | - | SWI | < 1935 | - | A | - |
Stephen | - | USA | - | - | S | |
Stephenson, A. M. | - | USA | - | - | A | - |
Sterling | Sterling Plastics | USA | 1968 | - | A, S | |
Stern, Abraham | - | POL | 1814 | - | M | - |
Stiatti | SIMAS | ITA | < 1958 | 1959 | M | - |
Stima | Albert Steinman | SWI | 1930 | - | M, A | |
Strasser & Rohde | - | GER | 1875 | 1951 | M | |
Stschetmasch Pensa | - | RUS | - | - | M | |
Suan-Pan (abacus) | - | CHN | 1100 | 1996 | B, M | - |
Sum-A-Graph | Sun Typewriter Co. | ? | - | - | M | - |
Sumat | - | ? | ~1950 | - | A | - |
Sumax | Addimult | GER | - | - | A | |
Sumit | - | USA | 1959 | - | M | - |
Sumlock | - | UK | 1950 | 1957 | M, E | |
Summa | M. Barthelmes | GER | 1886 | - | M | - |
Summator | Hans Sabielny | GER | 1921 | - | M | - |
Summira | Müller (Paul G.), Summira GmbH | GER | 1953 | > 1972 | M | |
Summograph | - | GER | 1924 | - | M | |
Summus | Eckelmann | GER | 1906 | - | M | - |
SUN (-> Seidel & Naumann) | - | ? | - | - | M | - |
Sun Hemmi | Hemmi Jirou & Co. | JAP | - | - | S | |
Sun Typewriter Co. | - | USA | - | - | M | - |
Sundstrand Adding Machine Co. | - | USA | 1914 | 1962 | M | |
Super-Simplex | - | ITA | - | - | M | - |
Supra | Addimult | SWI | > 1920 | - | M | - |
Supremathic | Stephens | FRA | - | - | S | |
Surot | Schubert und Rother | GER | 1920 | - | M | - |
Swem, L.W. | - | USA | 1885 | - | M | - |
Swift | Addipresto | HON | 1975 | 1985 | M | |
Swift Business Machines Corp. | - | USA | > 1950 | - | M | - |
Swinston | - | USA | - | - | S | |
Szyldy | - | POL | - | - | ? | - |
| T (69 brands) | - | - | - | - | - | - |
Taeggi-Piscicelli, Roberto | - | ITA | 1903 | - | M | - |
Tappit | - | UK | - | - | A | - |
Tarber | - | ARG | - | - | M | - |
Tarema | H.W. Ebmeyer | GER | < 1910 | - | A | - |
Tasco | - | ? | - | - | A | - |
Tasma | Thaleswerke GmbH | GER | 1924 | - | M | |
Tavernier-Gravet | - | FRA | - | - | S | |
Taylorix | - | GER | > 1920 | > 1960 | M, E | |
Technical Sales | - | UK | - | - | S | |
Technico | - | ? | - | - | M | - |
Tecnostyl | - | ITA | - | - | S | |
Teetor Adding Machine Co. | - | USA | 1910 | - | A, E | - |
Teetzmann and Company, G.m.b.H | - | GER | 1912 | - | M | - |
Tehnolemn srl | - | ROM | - | - | S | |
Teledyne Post | - | JAP | - | - | S | |
Terta | - | HUN | - | - | S | |
Thacher | - | USA | - | - | S | - |
Thales | Thaleswerke GmbH | GER | 1911 | 1965 | M, E | |
Thälmann-Werk VEB | - | GER | - | - | M | - |
The Book-Keeper Publishing Co. | - | USA | 1904 | - | M | - |
The Calculating and Engineering Co. | - | UK | - | - | ? | - |
The Fingertip System Co. | - | USA | <1936 | - | A | |
The Marbel Blood Calculator Co. | - | USA | - | - | M | |
The Precision Instrument Co. (PIC) | - | UK | 1901 | - | S | |
The Techical Standard | - | UK | - | - | S | |
Thedenat-Lepetit | - | FRA | - | - | S | - |
Theo Müggli | - | SWI | 1908 | > 1939 | M, E | - |
Thiemann | - | ? | - | - | A | - |
Thomas, Charles Xavier | - | FRA | 1820 | 1878 | M | - |
Thorn & Shatthuck | - | ? | 1880 | 1900 | M | - |
Thornton, A.G. | - | UK | 1880 | - | S | |
Tianjin Gong Nong Bing | - | CHN | - | - | S | |
Tianjin Squirrel | - | CHN | - | - | S | |
Tianjinshi Hongxing Gongchang | - | CHN | - | - | ? | - |
Tiger | - | JAP | 1930 | 1960 | M | - |
Tiko | - | ? | 1930 | 1965 | M, E | - |
Tim | Ludwig Spitz & Co. | GER | 1907 | 1923 | M | - |
TIM Unitas GmbH | - | GER | 1907 | 1925 | M, E | - |
Tim-Add | Gutschow & Company | GER | - | - | M | - |
Time is Money (TIM) | Ludwig Spitz & Co. | GER | 1907 | 1918 | M | - |
Tochmach | - | ? | - | - | S | - |
Todd Co. | - | USA | 1922 | - | M | - |
Tokyo Electric Co. (TEC) | - | JAP | - | - | M | |
Tom Thumb Products | - | USA | - | - | A | |
Tomlinson, Henry W. | - | USA | - | - | S | |
Topoplastic | - | FRA | - | - | S | - |
Torchi, Luigi | - | ITA | 1834 | - | M | - |
Torpedo-Werke AG | - | GER | 1896 | 1967 | M | |
Torres | - | SPA | 1920 | - | M | - |
Toshiba | - | JAP | - | - | M | - |
Totalia | Lagomarsino, FAI | ITA | < 1958 | 1976 | M, E | |
Totalis | - | ? | - | - | M | - |
Tourtel Adding Machine Syndicate, Ltd. | - | UK | 1911 | - | M | - |
Tower | Sears, Roebuck and Co. | ? | - | - | A | - |
Toyo | - | JAP | - | - | S | - |
Trabla | Albert Steinman | SWI | - | SW | A | - |
Trio | - | GER | < 1908 | - | M | |
Triumph | - | JAP | - | - | M, E | |
Triumph Precision Machine Co. | - | USA | 1910 | > 1970 | M | - |
Triumph Werke AG | - | GER | 1970< | - | E | |
Triumphator-Werk Heer & Co. | - | GER | 1903< | - | M | |
Tröger, Emil | - | GER | - | - | S | |
Troncet, Louis | - | FRA | 1891 | - | A | - |
Tru-Bilt | - | USA | - | - | S | |
Tschebicheff | - | RUS | 1882 | - | M | - |
Tvornica Racunskih Strojeva (TRS) | - | YOU | 1948 | - | M | |
Twentieth Century Calculator | - | ? | 1905 | - | M | - |
Type-Adder Corp. | - | USA | 1921 | - | M | - |
Tyrell | - | UK | 1830 | - | M | - |
| U (19 brands) | - | - | - | - | - | - |
U.S. Blue | Hemmi | USA | - | - | S | |
Uchida Yoko | - | JAP | - | - | S | |
Ugrich, J. | - | GER | <1907 | - | S | |
Uhrenfabrik Werner (-> Adsumudi) | - | GER | - | - | ? | - |
Ultra | Oerlikon Bührle | SWI | < 1958 | 1962 | E | |
Underwood | - | USA | 1874 | 1973 | M, E | |
Underwood Sundstrand | Underwood | USA | 1914 | 1962 | M, E | - |
Ungarische Rechen- und Schreibmaschinen-Fabrik A.-G. | - | AUT | - | - | ? | - |
Ungarische Rechnen- und Schreibmaschinenfabrik AG | - | HUN | <1912 | - | M | |
Unical AG | - | SWI | > 1925 | - | A | |
Union Instruments | - | USA | - | - | S | - |
Unique | - | UK | 1920 | 1975 | S | |
Unis ELGE | - | FRA | - | - | S, A | |
Unitrex | Eiko | JAP | - | - | E | |
Universal Adding Machine Co. | - | USA | 1904 | 1910 | M | - |
Urania-Vega | Clemens Müller | GER | - | - | M | - |
Urtzberger | - | ? | 1866 | - | M | - |
Utax-Ricoh | Ricoh | JAP | 1969 | 1973 | E | - |
UTO | - | DAN | - | - | S | |
| V (25 brands) | - | - | - | - | - | - |
Valiant | - | ? | - | - | A | - |
Valmet | - | FIN | > 1950 | > 1960 | E | |
Valtion kustannusliike Kirja | - | RUS | - | - | ? | - |
Vaucanson | - | FRA | 1910 | 1960 | M | |
VEB BMW (-> Ascota) | - | GER | - | - | M | - |
VEB Büromaschinenwerk Sömmerda | - | GER | - | - | M, E | - |
VEB Electro-Apparate-Werke | - | GER | - | - | S | |
VEB Feinwerktechnik Dresden | - | GER | - | - | M | |
VEB Mantissa | - | GER | - | - | S | |
VEB Rechenelektronik Meiningen | - | GER | - | - | M, E | - |
VEB Robotron Elektronik Dresden | - | GER | - | - | M | - |
VEB Secura-Werke | - | GER | <1949 | - | M | |
VEB Triumphator Werke | - | GER | 1904 | 1964 | M, E | |
VEB Triumphator Werke | - | GER | - | - | M, E | - |
Verea, Raymond | - | USA | > 1870 | - | M | |
Vereinigte Glashütter Rechenmaschinenfabriken | - | GER | 1920 | 1935 | M | |
Vest Pocket Adder (Ve-Po-Ad) | Reliable Typewriter & Adding Machine Co | USA | - | - | M | |
Veuve P. Larousse et Cie | - | FRA | <1889 | - | A | |
Victor Adding Machine Co. | - | USA | 1918 | 1968 | M, E | |
Victor Bernovits (-> Ungarische R.- und S. Fabrik) | - | AUT | - | - | M | |
Vila Nadal | - | SPA | - | - | S | |
Vinci | - | ? | - | - | M | - |
Vittorio Martini | Antica Fabbrica Vittorio Martini | ITA | - | - | S | |
Voss, Heinrich | - | GER | 1930s | - | A | |
Votam | Ehrich & Gratz | GER | 1922 | - | M | - |
| W (34 brands) | - | - | - | - | - | - |
W.F. Stanley & Co. | - | UK | 1853 | - | M, S | |
Waddington R. | - | UK | - | - | S | - |
Wahl Adding Machine Co. | - | USA | 1908 | - | M | |
Wales Adding Machine Co. (-> Allen Wales) | - | USA | 1903 | 1923 | M | - |
Walker, R.H. | - | USA | < 1869 | - | M | - |
Wallace & Wallace | Relay/Ricoh | ? | - | - | S | - |
Wanderer | Wanderer-Werke AG | GER | 1896 | > 1969 | M, E | |
Ward | - | USA | - | - | M, E | - |
Webb | - | USA | 1868 | - | A | |
Weber | - | USA | - | - | S | |
Weems System of Navigation | - | USA | - | - | S | |
Weiskopf und Hetschko | - | GER | 1921 | - | M | - |
Wembley | Industria Argentina | ARG | - | - | A | - |
Wen Hua | - | CHN | 1952 | - | M | - |
Werner, Karl | - | GER | 1861 | 1913 | M | |
Wertheimber | - | UK | 1843 | - | M | - |
Wescosa | - | USA | - | - | A | |
Wetzer, H. | - | GER | <1906 | - | ? | - |
WH Harling | - | UK | 1854 | 1964 | S | |
Whetmore | - | USA | 1916 | - | M | - |
White & Gillespie (W & G) | - | AUS | 1910 | - | S | |
White Adding Machine Co. | - | USA | 1916 | - | M | |
Wiberg | - | ? | 1860 ? | - | M | - |
Wichmann | Gbr. Wichmann | GER | - | - | S | |
Wiljon Technik-Art | - | UK | - | - | S | |
Willy Feiler GmbH | - | GER | < 1962 | > 1968 | E | |
Winslow | - | USA | - | - | S | |
Winter Calculating Machine | - | USA | 1859 | - | M | - |
Wizard | - | ? | - | - | A | - |
Wizard Werke GmbH | - | GER | 1945 | 1980 | A | |
Wolters-Noordhof | - | HOL | - | - | S | |
Wolverine Supply and Manufacturing Co. | - | USA | > 1960 | - | M | |
Wrenn Adding Machine Co. | - | USA | 1912 | - | M | - |
Württembergische Uhrenfabrik Bürk Söhne | - | GER | 1910 | - | M | |
| X (2 brands) | - | - | - | - | - | - |
X x X | Saidel & Naumann | GER | 1906 | 1932 | M | - |
X-Matic | - | ITA | 1956 | - | M | - |
| Y (2 brands) | - | - | - | - | - | - |
Yabsley, G.M. | - | AUS | - | - | S | |
Yazu | Yazu Jido Soroban | JAP | 1902 | - | M | |
| Z (7 brands) | - | - | - | - | - | - |
Zagreb | Tvornica Racunskih Strojeva (TRS) | YOU | - | - | M |  |
Zähringer, Johann | - | GER | - | - | A | - |
Zaklady Metalowe | - | POL | - | - | M | - |
Zeuthen & Aargard | Carlsen | DEN | - | - | M | - |
Zodiak Instruments Sales | Relay/Ricoh | USA | - | - | S | |
Zolnay Endre | - | HUN | 1939 | - | M | - |
Zulaica | - | SPA | - | - | S | |
(c) epocalc 2012