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Mechanical Calculators Manufacturer Database
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Brand
|
Manufacturer |
Origin |
First |
Last |
Type |
Info |
|
| A | |||||||
 | A. A. Weeks Mfg Co. | USA | ~1905 | - | A | - | |
| A. Dechesne | BEL | - | - | S |  | |
| A. Fumeo S.A. | ITA | - | - | S | - | |
| A.B. Addo | SWE | 1920 | - | M, E |  | |
| A.B. Advitaberg Industrier | SWE | - | - | M | - | |
| A.B. Affärssystem (ABA) | SWE | 1946 | 1948 | M | | |
| A.B. Original Odhner | RUS | 1874 | 1965 | M, E | - | |
| A.G. fur feinmechanische lndustrie (Agefi) | GER | 1924 | - | M | - | |
| A.M. Stephenson Co. | USA | 1890 | - | A | | |
| A.S. Nordisk Regnemaskinefabrik | DEN | 1921 | - | M | - | |
| A.W. Faber | GER | 1872 | - | S | - | |
 | AA | Rely/Ricoh | USA | 1961 | - | S | |
| AB Original-Odhner | SWE | 1874 | 1973 | M, E | | |
| abc | Tokyo Electric | JAP | 1960s | - | 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 | ~1965 | - | S | | |
| Adam Riese | Chr. Hamann | GER | 1909 | - | M | |
| Add-A-Mite | Monogram of California | USA | 1951 | - | A | |
| Add-em | Tom Thumb Products - Western Stamping Co. | USA | 1950s | - | A | |
| Add-Index Corp. | USA | 1922 | 1934 | M, E | | |
| Add-It | ? | - | - | M | - | |
| Add-o-Matic | Allied Mfg. Co. | USA | - | - | A | - |
| Addac Co. | USA | 1925 | 1960 | M | - | |
| Addall Co. | UK | 1910 | - | A | | |
| 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 | A.C.C.A. | ITA | 1947 ? | 1968 | M, E | |
| Addifix | JAP | >1960 | - | E | | |
| Addimat | Sergio Lanza | 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 | | |
| Addo-X | A.B. Addo | SWE | 1930s | 1960s | M, E | |
| Addograph Manufacturing Co. | USA | 1900 | - | M | - | |
| Addometer | Reliable Typewriter & Adding Machine Corp. | USA | 1927 | - | M | |
| Adix | J. Zähringer, Fa. Adolf Bordt, Adix Co. | GER | 1903 | - | M | |
| Adix Company | GER | 1903 | - | - | - | |
| 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 | 1950s | - | M, E | |
| Aero Products Research | USA | 1950s | - | S | - | |
| AG für Feinmechanische Industrie | GER | - | - | M, E | - | |
| AG für technische Industrie | SWI | - | - | M | - | |
| Agathon | ? | 1950 ? | 1955 | M | - | |
| Ahrend | HOL | - | - | S | | |
| Alba | MEX | - | - | S | | |
| Albert Nestler AG | GER | 1935 | - | S | | |
| Albona | Aldo Bona S.A. | ITA | >1930 | - | M, E | - |
| Alco | JAP | - | - | M, A, S | | |
| Alcoa | ? | - | - | ? | - | |
| Alderman | ? | - | - | S |  | |
| Aldo Bona S.A. (SABA) | ITA | 1935 | - | M | | |
| Alfa | Aldo Bona S.A. | ITA | - | 1957 | E | - |
| Alfa Balilla | Sozzi-Inzadi | ITA | - | - | M | - |
| Alfa Inzadi | Sozzi-Inzadi | ITA | 1935 | 1954 | M | |
| ALKU Rechenschieberfabrik | Alfred Kuhmann | GER | ~1947 | - | 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 | 1950s | S | | |
| Alvin & Company, Inc. | USA | 1950s | 1960s | S | | |
| American Adding Machine | American Can Co. | USA | 1913 | 1918 ? | M | - |
 | American Airlines, Inc. | USA | - | - | S | | |
| American Arithmometer Co. | USA | 1890 | - | M | - | |
| American Blueprint Co., Inc. | USA | 1950s | - | SP | | |
| American Can Co. | USA | 1901 | - | ? | | |
| American Gas Journal | USA | 1962 | - | SP | | |
| American Slide-Chart Corp. | USA | 1960s | - | SP | | |
| Amigo Addiermaschinen GmbH | GER | 1925 | 1930 | M | | |
| Anderson, Casella & Co. | UK | 1910s | - | S | | |
| Anido, Albert John | UK | 1923 | - | S | | |
| Antares | Pozzi SPA, Antares S.p.A. | ITA | 1940 | 1960 | M | |
| Antica Fabbrica Vittorio Martini | Antica Fabbrica Vittorio Martini | ITA | - | - | S | |
| Appoulot, Léon | FRA | - | - | S | | |
| Archimedes | Reinhold Pöthig (Glashütter Rechenmaschinenfabrik) | GER | 1906 | >1984 | M | |
| Archimedes | BRA | - | - | S | | |
| Arcici | SPA | 1968 | - | M | | |
| ARCUS | AUS | - | - | S | | |
| Argenta | Regent-Feinbau | GER | 1949 | - | M | |
| Argos | Gesellschaft fur Präzionstechnik GmbH | GER | 1913 | - | A | - |
| Aristo | Dennert & Pape | GER | 1936 | 1978 | S | |
| Arithma | GER | >1962 | - | A | - | |
| Arithmaurel | Maurel & Jayet | FRA | 1849 | - | M | - |
| Arithmograph | Rustringer, Bollée, Troncet | FRA | 1890 | 1920 | M | - |
| Arithmos | Orginal Ohdner | RUS | 1920s | 1956 | M | |
| Arithstyle | Gesellschaft für Maschinenbau GmbH | GER | 1906 | 1920 | M | |
| Arnault-Peineau | FRA | 1919 | - | S | - | |
| Arrow Calculator Mfg. Co. | USA | 1921 | - | M | - | |
| Art-O-Graph | USA | 1976 | - | SP | | |
| Arter, Dixon und Co. | UK | >1890 | - | A | | |
| Arva S.A. (Geneva) | SWI | 1952~ | - | E | | |
| Arzberger, Friedrich | GER | 1866 | - | M | | |
| ASA | Brämig & Bresslein | GER | - | 1953 | M | - |
| Ascota | VEB Buchungsmaschinenwerk | GER | <1966 | >1973 | M, E | |
| Ashton, Isaac | UK | - | - | S | - | |
| Ashwell, A.T. | GER | 1897 | - | M | - | |
| Askania Werke AG | GER | 1930s | - | D | | |
| Aston & Mander | UK | 1917 | - | S | | |
| Astrawerke AG | Astra Werke | GER | 1919 | 1967 | M, E | |
| Ateliers Vaucanson | FRA | 1910 | 1960 | M | | |
| Atlanta Adding Machines Co. | USA | - | - | A | - | |
| Atlas | USA | - | - | S | | |
| Atlas Copco | SWE | 1970s | - | SP |  | |
| Auch, Jacob | GER | 1790 | - | M | - | |
| Ault, G.L. | USA | 1897 | - | A | - | |
| Aurea | ? | 1956 ? | - | M | - | |
| Ausschuß für wirtschaftliche Fertigung (AWF) | GER | >1918 | - | S | | |
| Austin Adding Machine Corp. | USA | 1912 | - | M | - | |
| 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 | | |
| Avery, Harold T. | Marchant | USA | 1943 | - | M | - |
| axbxc | Produx | GER | 1964 | - | M | - |
| Axel Wibel AG | SWE | 1918 | - | ? | - | |
| Azzola & C. | ITA | - | - | S | | |
| B | |||||||
| B. F. Grizzle | USA | 1960s | 1977 | SP | | |
| Babbage, Charles | UK | 1822 | - | D | | |
| Baby Calculator Sales Co. | USA | 1925 | - | A | | |
| Badenia | Math. Bäuerle GmbH | GER | 1904 ? | 1968 | M, E | - |
| BAFRA Maschinen GmbH | GER | - | - | E | - | |
| Bagge, O.J. | SWE | 1884 | - | M | - | |
| Bahmann, Ad. | GER | 1888 | - | M | - | |
| Baines, Hewley Mortimer | UK | 1903 | - | SP | | |
| 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, J.D. | FRA | 1888 | 1913 | S | | |
| Barbour, Edmund D. | USA | 1872 | - | M | - | |
| Barit | FRA | 1901 | - | A | - | |
| Barnet | UK | 1842 | - | M | - | |
| Barrett Adding Machine Co. | USA | 1910 | 1922 | M, E | | |
| Bastiani, Attila | ITA | - | - | ? | - | |
| Baum, Michel | GER | 1913 | - | A | - | |
| Bayerische Reisszeugfabrik AG | GER | 1893 | >1950 | S | - | |
| Beacon | KOR | 1960s | - | S | | |
| Beaucourt, Hughes | FRA | 1912 | - | M | - | |
| Beauvais | FRA | - | - | S | - | |
| Beaver | JAP | 1960 | - | A | | |
| Beghin, Auguste | FRA | 1902 | - | S | | |
| Beijing Calculator Machine | CHN | 1800s | - | M | | |
| Belcher Brothers | USA | >1850 | - | S | | |
| Belga-Novic | BEL | - | 1932 | M, A | | |
| Bell-Punch Ltd. | UK | 1878 | 1950 | M | | |
| Beraplex | FRA | - | - | S | | |
| Berger Scientific Instruments, Inc. | USA | 1960s | - | SP | | |
| Bergmann Universal GmbH | GER | 1893 | - | A | - | |
| Berndt, O. | GER | 1881 | - | M | | |
| Berolina | Schuster, Hamann | GER | 1901 | 1932 | M | |
| Beta Enterprises | USA | - | - | S | | |
| Bicor | Brother International | JAP | 1960s | - | E | - |
| Bieringer & Hebetanz | GER | 1873 | - | M | - | |
| Billeter, Ernest (-> National) | 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 | - | SP | |
| Blundell Rules Ltd. | UK | 1947 | 1956 | S | | |
| Bohn-Contex | GER | - | - | E | | |
| Bohnham & Schram | USA | 1900 | 1910 | M | | |
| Bollée, Léon | FRA | 1888 | - | M | - | |
| Bolyai | Electro Murus | ROM | 1964 | - | M | - |
| Bonwitt | The British Engraving and Nameplate Mfg Co Ltd. | UK | <1900 | - | S | |
| Boots Ringplan | UK | - | - | S | - | |
| Boots Ringplan | Jakar | JAP | 1960s | - | S | |
| Borland & Hoffmann | USA | 1878 | - | M | - | |
| Boucher, Alexander Emile | FRA | - | - | S | | |
| Bouchet, M. | USA | 1883 | - | M | - | |
| Bousfield, George | UK | ~1900 | - | S | | |
| Bowler | UK | >1960 | - | M | - | |
| Boykin, Bernard C. | USA | 1960s | 1970s | S | | |
| Braun, Anton | GER | 1727 | - | M | - | |
| Braun, Antonius | GER | 1727 | - | M | - | |
| Braunschweig Rechnenmaschine-Fabrik Rema | GER | 1914 | - | A | - | |
| Brdr. Carlsen A/S | DEN | <1965 | - | M | | |
| Brennan Adding Machine Co. | USA | 1925 | 1933 | M | | |
| Brevetti | Sozzi Angelo & Co. | ITA | >1950 | - | 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) | UK | - | - | S | - | |
| Brother Industries, Ltd. | JAP | 1970s | - | E | | |
| Browne, Arthur & Bros | USA | - | - | S | | |
| Browne, C.O. | AUS | - | - | S | | |
| Brunsviga | Brunsviga/Grimme, Natalis & Co. AG | GER | 1892 | - | M, E | |
| Buchheister & Oppelt | GER | 1925 | - | A | | |
| Bulmers (Calculator) Ltd. | UK | >1930 | >1959 | M | - | |
| Bundy Manufacturing Co. | USA | 1904 | 1906 | M | - | |
| Bundy Typewriter Co. | USA | 1950s | - | M | - | |
| Bunzel Delton Werk Fabrik | AUT | 1908 | - | M | | |
| Bunzel, Hugo | AUT | 1908 | - | M | | |
| Bunzel-Delton | Bunzel-Delton-Werk Fabrik | AUT | 1908 | - | M | - |
| Burattini, Tito Livio | ITA | 1650s | - | D | | |
| Bürger | Citizen | ? | 1967 | - | E | - |
| Burkhardt, Arthur | Erste Glashütter Rechenmaschinenfabrik | GER | 1878 | 1925 | M | |
| Büromaschinenwerke AG | GER | - | - | M | - | |
| Burridge, L. S. / Marshman, R. | USA | 1896 | - | M | - | |
| Burroughs Adding Machine Co. | USA | 1886 | 1986 | M | | |
| Bush, Vannevar | USA | 1934 | - | D | | |
| Business | BEL | 1928 | - | M, A | - | |
| Büttner, Otto | GER | 1888 | - | M | - | |
| Bystritsa | RUS | - | - | E | | |
| C | |||||||
| C-Thru Ruler Co. | USA | - | - | S | | |
| C.M.C. Italcalcolo | ITA | <1955 | - | M | | |
| C.N. Pickworth W.H. SC. | UK | ~1910 | - | S |  | |
| CAL | AUS | - | - | S | | |
| Cal-Co | ITA | - | - | S | | |
| Calco | A.S. Nordisk Regnemaskinefabrik | DEN | 1921 | - | M | - |
| Calcorex | Tvornica Racunskih Strojeva (TRS) | YOU | 1965 | 1977 | M, E | |
| Calculator | Joseph Kopfer & Sohne | GER | 1911 | - | M, A | - |
| Calculator Co. | USA | 1915 | 1922 | M | | |
| Calcumeter | Herbert North Morse | USA | 1901 | - | A | - |
| Calcus Co. | CAN | 1920 | - | M | - | |
| Calderoni Mű- és Tanszervállalat R.-T. | HUN | 1910s | 1940s | S | | |
| Calepp | FRA | - | - | ? | - | |
| Caltec | UK | 1970s | - | E | - | |
| Carl Lindström AG | GER | 1914 | - | M | | |
| Carl M. Behr & Co. | GER | 1908 | - | M | - | |
| Caroline | SIMEX, Vullierme | SWI | 1960 | 1970 | M | |
| Caroll, D. | USA | 1876 | - | M | - | |
| Carrier Corp. | USA | 1970s | - | SP | - | |
| Carroll, David | ? | 1876 | - | - | - | |
| Caze | FRA | 1720 | - | A | - | |
| Cellatron | VEB Rechenelektronik Meiningen | GER | 1963 | 1970 | M, E | |
| Cellograf | ITA | - | - | S | | |
| Centigraph | Arthur E. Shattuck | USA | 1891 | - | M | - |
| Chadwick-Miller Inc. (CMI) | USA | ~1950 | - | A, M | - | |
| Chapin, G.W. | USA | 1870 | - | M | - | |
| Charles and Edwin Layton | UK | 1883 | 1914 | M | | |
| Charles Beseler Co. | Keuffel & Esser | USA | - | - | S |  |
| Charles Bruning Co. | USA | 1960s | - | S | | |
| Charles Griffin & Co. Ltd. | UK | 1908 | - | S | | |
| Charpentier, G. | FRA | 1913 | - | S | | |
| Charvoz, Inc. | Relay/Ricoh | USA | - | - | S | - |
| Charvoz-Roos | USA | - | - | S | | |
| Chateau Frères | FRA | <1897 | 1956 | M | | |
| Chatelain, Henri | FRA | 1878 | - | S | | |
| Chebyshev, Pafnuty Lvovich | RUS | 1876 | - | M | | |
| Chemstrand | USA | - | - | S |  | |
| Chevrolet | Dial-A-Matic | USA | - | - | A | - |
| Chirchlow | USA | - | - | S | - | |
| Circolator | Circograf KG | GER | 1970 | - | S | - |
| Citizen Business Machines Inc. | JAP | 1963 | 1972 | E | | |
| Clary Multiplier Corp. | USA | >1940 | 1969 | M, E | - | |
| Classic | Aldo Bona, Classic S.A. | ITA | >1950 | 1958 | E | - |
| Classic | UK | - | - | S | | |
| Clemens Müller AG | GER | - | - | M | - | |
| CMI Inc. | JAP | 1950c | - | M | | |
| Colbert | FRA | - | - | M | - | |
| Colombus | Klein & Setter | GER | 1910 | - | M | - |
| Colts | GER | - | 1914 | M | | |
| Columbus Calculator Co. | AUT | 1920c | - | A | | |
| 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. | Ricoh (>1945) | 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 | - |
| Computer Manufacturing Co. | Ross, Louis | USA | 1919 | - | S | |
| Concise Co., Ltd. | JAP | 1949 | - | S | | |
| Consul | Zbrojovka Brno | CZE | <1958 | 1971 | E | - |
| Contex | Brdr. Carlsen, Rex-Rotary | DEN | 1945 | 1975 | M, E | |
| Contina AG | LIE | 1946 | 1971 | M | | |
| Continental | Wanderer Werke | GER | 1916 | 1949 | M, E | |
| Continentale Büro-Reform (CBR) | Unical | GER | - | - | A | - |
| Conto | Carl Landolt | SWI | 1910 | - | A | |
| Contostyle | Aristlye, Goldman | USA | 1906 | - | M | - |
| Controller Calculator KG | GER | 1950s | - | S | | |
| Coradi, Gottlieb | SWI | 1880 | 1960s | S | | |
| Cordingley | UK | 1890 | - | A | - | |
| Cordt-Universal-Rechenmaschinenfabrik GmbH | GER | 1939 | - | ? | - | |
| Corema S.A. (Geneva) | SWI | 1946 | 1955 | M | | |
| Corexa | Corema S.A. | SWI | 1950s | - | M | |
| Corona Typewriter Co. | USA | 1923 | >1956 | M | | |
| Correntator | Unical | SWI | 1925 | - | A | |
| Cosmos Büromaschinen | GER | 1921 | - | M | - | |
| Countess | Bowler | UK | - | - | M | - |
| Courvoisier | FRA | - | - | S | | |
| Cox & Stevens | USA | - | - | SP | | |
| Cram, M. M. | USA | 1906 | - | M | - | |
| Creative Workshop, Inc. | Ole Jorgensen | DEN | 1970 | - | S | |
| Cubus | Edmund Schneider | GER | 1927 | - | S | |
| Cuhel, Franz | CZE | 1890 | - | M | - | |
| Curta | Cortina AG | LIE | 1948 | 1956 | M | - |
| Curtec | FRA | - | - | S | - | |
| D | |||||||
| D'Azevedo, Continho | POR | 1884 | - | M | - | |
| Da | BEL | 1952 | 1958 | M, A | - | |
| Dacometer | Dacorema, Rich. Müller A/S | DEN | 1947 | - | M | - |
| Dacorema | DEN | 1901 | - | M | | |
| Dactyle | Château Frères | FRA | 1905 | - | M | |
| Daemen, Schmidt & Co. | SWI | >1910 | - | S | | |
| 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. | GER | - | - | ? | - | |
| Danuvia Ipari és Kereskedelmi Rt. | HUN | 1949 | - | S | | |
| Dargue Brothers Ltd. | UK | <1910 | 1945 | S | | |
| Darnley | UK | 1920 | - | S | | |
| Davis Instruments Corp. | USA | - | - | S | | |
| De Beauclair, Wilfried | Technische Hochschule Darmstadt | GER | 1930s | - | D | |
| De Boistissandeau, Hillerin | FRA | 1730 | - | M | - | |
| De Leon Import & Export Co (ODELCO) | SUN | PHI | - | - | S | |
| Deeva | IND | - | - | S |  | |
| Delta - Ozi SeisaKusho | JAP | - | - | S | - | |
| Delton | Hugo Bunzel | AUT | <1908 | - | M | |
| Demos | Theo Müggli | SWI | 1923 | - | M | |
| Dempster, Jack | USA | <1933 | - | S | | |
| Den Norske Stansefabrik A/S (Stansa) | NOR | - | - | M, E | | |
| Denise | ? | 1930 | 1960 | M | - | |
| Dennert & Pape | GER | - | - | S | | |
| Dennis, Adolphus Sylvester | USA | 1908 | - | M | - | |
| Denominator Adding Machine Co. | USA | 1915 | 1925 | M | | |
| Desk Add-a-Matic | Chadwick | JAP | 1950 | 1960 | M | - |
| Deuspa | ? | - | - | S |  | |
| Deutsche Rechenmaschinen-Werke AG | GER | - | - | M | - | |
| Deutsche Telephonwerke und Kabelindustrie AG (DeTeWe) | GER | 1887 | 1958 | M | | |
| Devaux-Chevet (Baj) | FRA | - | - | S | - | |
| Devco | USA | 1950s | - | S | | |
| Dial-A-Matic | Sterling Plastics Co. | USA | 1954 | - | A | |
| Diehl GmbH | GER | 1902 | 1959 | M, E | | |
| Diera | ? | 1906 | - | M | | |
| Dieterich-Post Co. | USA | - | - | SP | | |
| Dietrich-Post Co. | USA | - | - | S | - | |
| Dietzhold, Curt | GER | 1876 | - | M | | |
| Digitrex | Heiwa Seimitsu Co., Ltd. | JAP | <1970 | - | E | - |
| Dimier | FRA | - | - | S |  | |
| Dimm | ITA | 1957 | - | M | | |
| Ding Feng | CHN | 1960s | - | S | | |
| Direct | Theo Müggli (Moesch & Huber) | SWI | 1920 | 1937 | M, E | - |
| Disney, Walt | USA | - | - | A, S | | |
| Diwa Manufacturing Co. | DEN | - | - | S | | |
| Dixi | Dixma A.B. | SWE | 1940 | 1963 | M, E | - |
| Dixma A.B. | Addo | SWE | 1939 | 1964 | M, E | |
| Donkin, Bryan | UK | - | - | S | | |
| Downing, Samuel | UK | 1833 | - | M | - | |
| Dr. Albert Hauff | GER | 1910c | - | S | | |
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| E | |||||||
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| F | |||||||
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| Gardner Calculator Co. | USA | <1928 | 1937 | M | - | |
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| Lorkin | UK | 1800s | - | S | | |
| Lotos Flower | CHN | - | - | M | | |
| Louis Fournier-Gerald Mang | FRA | 1919 | - | M | | |
| LSLO | RUS | 1970s | - | S | | |
| Ludgate, Percy | EIR | 1914~ | - | D | | |
| Ludlum, A.C. | USA | 1888 | - | M | | |
| Ludwig Spitz & Co. | GER | 1907 | - | M | | |
| Lugagne | FRA | - | - | S | - | |
| Luini | ITA | >1950 | - | ? | - | |
| Lutz | JAP | - | - | S | | |
| Lyra Orlow | LYRA Pencil Co. | GER | 1960s | - | S |  |
| M | |||||||
| M. Gordon Co. | USA | - | - | SP | | |
| M.D.S. | UK | - | - | S |  | |
| M.H. Mear & Co. | UK | 1947 | > 1970 | SP | | |
| M.K.T. Gosremprom | RUS | <1932 | - | M | | |
| M.U.S.A. | ITA | >1930 | - | ? | - | |
| Machines à calculer Raymond | FRA | 1935 | - | A | - | |
| Machines Automatiques Modernes (MAM) | FRA | - | - | E | - | |
| Madas | Egli AG | SWI | 1908 | 1968 | M, E | |
| Magic Brain | Chadwick | JAP | 1950 | 1975 | M, A | |
| Mahn, Rudolf | GER | 1887 | - | M | - | |
| Make | ? | - | - | M, E | - | |
| Mallman Addograph Mfg. Co. | USA | 1903 | 1916 | M | - | |
| Mannheim, Amédée | FRA | <1928 | - | S | | |
| Marc | Unis | FRA | 1930s | 1950s | S | |
| Marchant Calculating Machine Co. | USA | 1911 | 1971 | M, E | | |
| Marini | ITA | - | - | S | - | |
| Mark | Triumph | JAP | - | - | E | - |
| Markant | ? | 1970s | - | S |  | |
| Marston, Francis | UK | 1842 | - | S | | |
| Maruzen Sewing Machine Co. Ltd. | JAP | 1938 | 1960s | M | - | |
| Maschinenanstalt Odhner & Hill | SWE | <1890 | - | M | | |
| Maschinenbau Koch | GER | - | - | M | - | |
| Maschinenfabrik W. T. Odhner | RUS | - | - | M | | |
| Maschinenund Werkzeugfabrik Paul Brüning | GER | 1930 | - | M | - | |
| Mascot | USA | - | - | S | - | |
| Master | BEL | >1921 | > 1937 | A | | |
| Master Electric | USA | - | - | S | - | |
| Matador | Grimme, Natalis & Co. | GER | 1905 | - | M | |
| Mathematicus | ? | - | - | S | - | |
| Mathias Bäuerle GmbH (EMBEE) | GER | 1863 | - | M | - | |
| Mathieu & Lefèvre | FRA | - | - | S | - | |
| Matson | FRA | - | - | A | - | |
| Matthijssen, P. | HOL | 1970s | - | S | | |
| Mauch, Julius Hermann | SWI | ~1910 | - | M | | |
| Mauser-Werke AG | GER | >1931 | 1964 | M, E | | |
| MBC | JAP | - | - | A | | |
| McCaskey Register Co. | USA | 1919 | 1920 | M | - | |
| Mead | JAP | - | - | S | - | |
| Mecanica Moderna S.A. | MEX | - | - | ? | - | |
| Mechanical Accounting Co. | USA | 1900 | 1925 | M | - | |
| Mechanitscheski Sawod Dserschinskowo | RUS | 1921 | 1941 | M | | |
| Meissner-Fabrika | GER | ~1970 | - | S | | |
| Meiwa | JAP | 1960s | - | A | | |
| Mekeba | Unis | ? | 1950s | - | S | |
| Melitta | VEB Ernst Thälmann | GER | 1925 | 1960 | M, E | |
| Menriver | Industria Calculadores Espanolas S.L. | SPA | 1960 | - | M | - |
| Merca | Valmet Oy | 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 | - | |
| Micra | JAP | ~1960 | - | A | | |
| Micronta | Relay/Ricoh | USA | - | - | S | |
| Midget Sales Co. | USA | 1910 | - | A | - | |
| Mignon | ? | - | - | S |  | |
| Miller Dial | USA | - | - | S | | |
| Millionär | Egli AG | SWI | 1893 | 1925 | M | |
| Minerva | Famosa SPA | SPA | 1950s | - | M | |
| Mini-Add | Exactus Business Machine | 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 | | |
| Mogiljanskij | UK | 1948 | - | S | | |
| Molter, Whilelm | GER | 1920s | - | S | | |
| Monarch | Remington Typewriter Co., Listing -Adding Machines | USA | 1925 | 1964 | M | |
| Monogram of California | USA | 1951 | - | S | | |
| Monopol-Duplex | Dresden Control Cash and Calculating Machine Factory | GER | 1894 | 1904 | M | - |
| Monori Kefegyár | HUN | ~1958 | - | S | | |
| Monos AG | GER | 1923 | - | M | - | |
| Monroe Calculating Machine Co. | USA | 1912 | 1986 | M, E | | |
| Montrichard | FRA | - | - | S | | |
| Moon-Hopkins Billing Machine Co. | USA | 1912 | 1921 | M | | |
| Morat, Franz | GER | 1912 | - | M | | |
| Morland, Samuel | UK | 1664 | 1670 | A | - | |
| Morse Adding Machine Co. | USA | 1909 | - | M | - | |
| Morse Chain Co. | USA | <1920 | - | A | | |
| Mozzoni, Giuseppe | ITA | 1847 | - | A | - | |
| Muldivo Calculating Machine Co. Ltd. | UK | 1912 | 1957 | M, E | | |
| Muldovo | FRA | 1924 | - | M | - | |
| Mulduvo | FRA | - | - | M | - | |
| Müller, Johann Helfrich | GER | 1784 | - | M | | |
| Müller, Paul G. | GER | 1940 | 1960 | M | - | |
| Multator | Produx | GER | 1954~ | - | M | - |
| Multi-Divi AB | SWE | >1920 | >1940 | A | - | |
| Multi-Divo | Berolina Co. | ? | 1902 | - | M | |
| Multical | Meuter, Otto | GER | 1950 | - | M | - |
| Multifix | Den Norske Stansefabrik | NOR | 1948 | 1953 | M, E | |
| Multo A.B. | SWE | 1917 | 1957 | M | | |
| Multor | Addimult | GER | 1950s | 1960s | S | |
| Mures | Electromures | ROM | <1962 | - | M, E | |
| Musina, Opprandino | ITA | 1867 | - | A | - | |
| N | |||||||
| N.K.T.P. | RUS | 1935 | - | M | - | |
| Nadal, Vila | SPA | - | - | S | | |
| Nan-Hui | CHN | - | - | S | - | |
| National | USA | 1904 | 1962 | M, E | - | |
| National | National (Zurich) | SWI | 1918 | 1922 | M | - |
| National Cash Register (NCR) | USA | 1891 | 1974 | M | | |
| Neal Feay | USA | - | - | SP | | |
| Neckermann | GER | - | - | M | | |
| Neolt S.p.A. | ITA | - | - | S | | |
| Neon | Stationery MFG. Co. | UK | - | - | A | - |
| New Standard Adding Machine Co. | USA | - | - | M | | |
| NFI | Dynamit AG | GER | 1948 | 1954 | M | - |
| Nikkei | JAP | - | - | S | - | |
| Nippon Calculating Machine Co., Ltd. (NCM) | JAP | 1945 | - | M | - | |
| Nisa Kalkulacni | CZE | 1950 | 1968 | M | | |
| Nobema Drawing Instruments | UK | - | - | S | | |
| Norden | SWE | - | - | S | - | |
| Nordhammer Rechnenmaschine AG | GER | - | - | A | - | |
| NORMA-Mechanik | GER | 1960s | - | S | | |
| Normus | Huber, Jacob | SWI | - | - | S | |
| Northrop Wilcox | USA | - | - | S | - | |
| Norton & Gregory Ltd. | UK | 1930s | - | S | | |
| Novotni | Warren Knight Co. | USA | 1945 | - | S | - |
| Numeria | SICMU, Lagomarsino | ITA | 1940 | 1969 | M | |
| Numerograph Mfg. Co. | USA | 1896 | - | M | - | |
| Nürnberg-Fürther Industriewerk (NFI) | GER | >1950 | - | M | - | |
| O | |||||||
| O.K.E | ARG | - | - | S | - | |
| OAO Kalibr | RUS | - | - | S | | |
| Oerlikon-Bührle & Co. | SWI | 1906 | act. | E | - | |
| Ohico | HOL | 1930s | - | S |  | |
| Ohmoto Tekko (->Tiger ) | JAP | <1923 | - | M | | |
| Oliver Co. | AUT | - | - | M | - | |
| Olivetti Industria | ARG | - | - | M | - | |
| Olivetti Underwood | Olivetti | USA | 1950s | - | M | - |
| Olpimatic | GER | 1950s | - | M | - | |
| Olson | Relay/Ricoh | USA | - | - | S | |
| Olympe | ? | 1958 | - | M | | |
| Olympi | Olympia-Werke AG | GER | 1948 | - | M, E | |
| Omaro | FRA | 1928 | - | S | | |
| Omega | Wescosa | USA | - | - | A | - |
| Omega | Relay/Ricoh | USA | - | - | S | |
| Optima | Dr. Albert Hauff | GER | 1910 | - | S | |
| Optische Antstalt C.P. Goerz AG | GER | 1921 | - | 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 | - | |
| Orions | ? | - | - | S | | |
| Orlin | ? | 1892 | - | M | - | |
| Oslo University | NOR | 1938 | 1942 | D | | |
| Otis King | Carbic, Ltd. | UK | <1940 | >1950 | S | |
| Ott, Albert | GER | 1938 | - | D | - | |
| Ott, Max | GER | - | - | ? | - | |
| Otto Holzapfel und Cie. | GER | 1914 | 1953 | M | | |
| Otto Meuter & Sohn | GER | 1928 | 1973 | A | | |
| Oxner Rechnemaschinen-Fabrik | SWI | 1951 | 1954 | M | - | |
| Ozone | ? | - | - | S | - | |
| P | |||||||
| Pablo Huc | SPA | - | - | M | - | |
| Paisley Calculator Co. | USA | 1939 | - | S | | |
| Palagi Palmarini, Luigi | ITA | 1829 | - | A | - | |
| Paleo | Relay/Ricoh | ? | - | - | S | - |
| Pangborn Adding Machine | USA | 1908 | - | M | - | |
| Parmelee, Du Bois D. | USA | 1850 | - | M | - | |
| Pascal | FRA | 1642 | - | M | - | |
| Payen, Louis-Eugène | FRA | 1885 | - | M | | |
| Pearl Engraving Co. | USA | - | - | A | | |
| Pebalia | Vinzenz Edlen of Pebal | CZE | 1908 | - | M | |
| Peerless | Mathias Bäuerle | GER | 1904 | 1947 | M, E | |
| Pefect | ? | - | - | A | - | |
| Peghetti-Corsini S.p.A. | ITA | >1950 | - | ? | - | |
| Penol | ? | 1930s | - | S |  | |
| Perag Adsu | PERAG | GER | 1948 | - | M | |
| Péraux | FRA | <1928 | - | S | | |
| Pereire, Jacob-Rodrigues | SPA | 1750 | - | A | | |
| Perrault | FRA | 1700 | - | A | - | |
| Perry Graf Corp. | USA | 1960s | - | S | | |
| Peter Pan | Wolverine | USA | - | - | M | - |
| Peters-Morse Mfg. Co. | USA | 1922 | 1956 | M | - | |
| Petersson, Axel Jacob | NOR | 1873 | - | M | | |
| Petetin, Alexis | FRA | 1885 | - | M | | |
| Petters Ltd. | UK | <1923 | - | M | | |
| Philips Telecommunications | HOL | 1950s | - | SP | | |
| Phönix Bureaumaschinenwerke | GER | 1914 | - | M | - | |
| PHuc | Pablo Huc | SPA | 1948 | - | M | - |
| PIC (-> The Precision Instrument Co.) | USA | - | - | S | - | |
| Piccolo | ? | 1960 | >1972 | A | - | |
| Pickett | Pickett, Relay/Ricoh | USA | 1943 | 1975 | S | |
| Pickett & Eckel, Inc. | USA | - | - | S | | |
| Picma | Le Girondin, Unis (ELPE/ELGE) | FRA | - | - | 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 Industria e Comercio Artefatos Plasticos SA | BRA | 1970s | - | S | | |
| Platiau, Fernand | BEL | ~1930 | - | 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 | - | |
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| Post | Hemmi | USA | 1921 | 1965 | S | |
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| Pottin, Henri | FRA | 1885 | - | M | | |
| Pozzi S.p.A. | ITA | 1911 | - | S | - | |
| Präzisionstechnik - Elektrotechnik u. Radio GmbH (PERAG) | GER | - | - | M | | |
| Precisa AG | SWI | 1935 | >1967 | M, E | | |
| Precise | ? | - | - | M | - | |
| Precision Adding Machine Co. | USA | 1924 | - | M | | |
| Predom-Mesko | POL | 1924 | 1976 | M | | |
| Prestige | ? | - | - | S | - | |
| Primo Stabilimento Italiano Calcolatrici (PSIC) | ITA | 1932 | - | M | | |
| Princess-Saldi | Knepper & Knappich GmbH | GER | <1958 | 1959 | E | - |
| Pro Calculo | Addiator, Otto Meuter | ? | >1914 | - | A | |
| Procento | Ungarische Rechnen- und Schreibmaschinenfabrik AG | HUN | 1912 | - | M | - |
| Productor-Rechenmaschinenwerke | AUT | - | - | M | - | |
| Produx | Otto Meuter | GER | 1928 | 1972 | M, E, A | - |
| Q | |||||||
| Qualitechnic (Mercura) | FRA | - | - | S | | |
| Quentell Sales Corp. | USA | 1923 | 1925 | M | - | |
| Quevedo, Leonardo Torres | SPA | 1920 | - | M | | |
| Quick | Willy Feiler | GER | <1961 | >1963 | E | - |
| Quick-Add | ? | 1952 | 1975 | M, E | - | |
| Quixsum | Precision Adding Machines | USA | 1924 | - | M | |
| R | |||||||
| R.C. Allen Businesss Machines | USA | 1932 | >1950 | M | | |
| Radio Corporation of America (RCA) | USA | - | - | S |  | |
| 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 | - | |
| 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 | - | |
| Rechnitzer, Alexander | AUT | 1906 | - | E | | |
| Record | Nordhammer Rechnenmaschine, Meuter | GER | 1913 | 1956 | A | |
| Recta | Beaucourt, Hughes | FRA | 1910s | - | M | - |
| Regent-Feinbau | GER | 1949 | 1958 | M | | |
| Regina | Hebecker & Taetzel | GER | 1925 | 1968 | M, E | |
| REGINA-Rechenmaschinen Heinrich Holz | GER | - | - | M | - | |
| Regna Oy | FIN | 1960s | - | M | | |
| Reiss GmbH | GER | 1968 | - | S | | |
| Relay | San-Ai Measuring Instruments | JAP | - | - | S | |
| Reliable Typewriter & Adding Machine Corp. (RTAM) | USA | 1927 | 1950 | A | - | |
| Rema | Braunschweig Rechnenmaschine-Fabrik Rema | GER | 1915 | 1956 | M | - |
| Remington | USA | 1960s | 1968 | M, E | - | |
| Remington-Rand, Inc. | USA | 1927 | 1932 | M, E | | |
| Renown | ? | - | - | ? | - | |
| Reports | ? | 1950 | - | M | - | |
| Result | ? | 1940s | - | M | - | |
| Resulta | Paul Brüning | GER | 1911 | 1967 | M, E | |
| REWA | GER | ~1910 | - | S | | |
| Rex-Rotary Int. Comp. A/S | DEN | - | - | M, E | - | |
| Reybaud (RéBo) | FRA | 1925 | 1930 | A | - | |
| Reynal, Camille | FRA | 1925 | - | S | | |
| Rhei-Ta | JAP | - | - | S | | |
| Rheinische Metallwaren- und Maschinenfabrik Sömmerda AG | GER | 1928 | - | M | | |
| Rheinmetall GmbH | GER | 1924 | 1965 | M, E | | |
| Richard Müller A/S | DEN | <1950 | - | M | | |
| Richardson | USA | - | - | S | | |
| Richer | FRA | 1874 | - | S | | |
| Ricoh Company Ltd. | JAP | <1960 | >1984 | E, S | | |
| Rista | GER | 1960s | - | S | | |
| RIV Officine di Villar Perosa | ITA | 1906 | 1961 | M | | |
| Robert Kling GmbH | GER | 1918 | 1975 | M | | |
| Roberts, Edward | UK | 1750s | - | S | | |
| Robinson | ? | - | 1925 | M | - | |
| Robinson, Tim | USA | 2005 | - | D | | |
| Robjohn, Wiliam | USA | 1872 | - | M | - | |
| Rokli | Robert Kling GmbH | GER | 1949 | 1975 | M, E | - |
| Rolls Record | GER | - | - | S, A | - | |
| Romana | Italcalcolo S.A. | ITA | 1939 | - | M | - |
| Romanoni | Remington | ITA | <1958 | - | M | |
| Roos Co. | USA | 1930s | - | S |  | |
| Rosseland, Svein (-> Oslo University) | NOR | 1942 | - | D | | |
| Roth, Didier | FRA | 1841 | - | M | - | |
| Royal | Ushida Yoko Co., Ltd. | JAP | 1960s | - | S | |
| Royal | Litton | UK | 1950s | - | M | |
| Royal McBee Corp. | USA | - | - | M | - | |
| RPGP | BUL | 1970s | - | S |  | |
| Rudolf Schweizer & Cie. | SWI | 1936 | - | A | | |
| Runge, Eduard | GER | 1896 | - | A | - | |
| Ruthardt & Co. GmbH | GER | <1927 | - | M | | |
| Ruxton Multi-Vider Corp. | USA | 1929 | - | S | | |
| Ruyi | Sida | CHN | - | - | S |  |
| S | |||||||
| S. & N. (SUN) (-> Seidel & Naumann) | GER | 1910 | - | M | - | |
| S.C. Electromures S.A. | ROM | - | - | M | - | |
| S.G. | ITA | ~1950 | - | A | | |
| Sabielny, Hans | GER | - | - | M | - | |
| Safetech | USA | - | - | S | | |
| Saldoritaverken | SWE | 1937 | - | M | | |
| SAMAS | ITA | >1950 | - | ? | - | |
| Samostchoty | Bouniakovsky | RUS | 1867 | - | M | - |
| San-Ai Measuring Instruments | JAP | 1950 | 1963 | S | | |
| Sander | SIN | >1950 | - | M | - | |
| Sanders | Société Industrielle des Téléphones | FRA | 1912 | - | M | - |
| Sans & Streiffe | Relay/Ricoh | USA | - | - | S | |
| Sauer, Robert | Technische Hochschule Aachen | GER | 1950s | - | D | |
| Sauter, Johann Jacob | GER | 1796 | - | A | | |
| Saxonia | Vereinigte Glashütter Rechenmaschinenfabriken | GER | 1895 | 1925 | M | |
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| Scherbius, Arthur | GER | - | - | M | | |
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| Scheutz, Per Georg | SWE | 1837 | - | M | | |
| Schickard, William | GER | 1623 | - | M | | |
| Schilt, Victor | SWI | 1850 | - | M | - | |
| Schneider Rechenapparatefabrik | GER | <1909 | - | A, S | | |
| Schooling | The Calculating and Engineering Co. | UK | 1912 | - | M | - |
| Schott, Kaspar | GER | 1668 | - | M | - | |
| Schubert & Co. | GER | 1938 | >1974 | M, E | | |
| Schubert & Salzer Maschinenfabrik AG | GER | 1906 | - | A | | |
| Schubert und Rother | GER | - | - | M | - | |
| Schuster, Ernst | GER | 1901 | 1907 | M | - | |
| Schuster, Johann Christof | GER | 1792 | 1822 | M | - | |
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| Science Spectrum, Inc. | USA | - | - | S | | |
| Scientific Instruments Co. (SIC) (SINCO) | Relay/Ricoh | USA | <1961 | >1964 | S | |
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| Scura B.S.M. Fort | IND | - | - | S |  | |
| Sears, Roebuck and Co. | USA | 1886 | - | A | - | |
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| Seger | ? | - | - | S |  | |
| Seidel & Naumann (S & N, SUN) | GER | 1870 | - | M | | |
| Select | FRA | 1959 | - | M | - | |
| Selling, Eduard | GER | 1886 | - | M | | |
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| Service Slide Rules | AUS | - | - | S | | |
| Service Studios | AUS | 1943 | - | S | | |
| Shanghai Calculator | CHN | - | - | M | | |
| Shanghai Ding Feng | CHN | - | - | S | | |
| Shanghai Si Da | CHN | - | - | S | | |
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| Shop-n-Add | Giftcraft Inc. | USA | - | - | A | - |
| Sida | CHN | - | - | S | | |
| Siegfried Link GmbH & Co. KG | GER | - | - | ? | - | |
| Sigma | SACMA | ITA | 1951 | 1954 | M | |
| Simeca S.A. | SWI | 1949 | >1962 | E | | |
| Simplon | Dargue Bros. | UK | <1934 | - | S | |
| Sirius | Sirius-Werk | GER | 1912 | - | M | - |
| Skala | POL | 1950s | 1980s | S | | |
| Skyline | Relay/Ricoh | USA | - | - | S | |
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| Slide Rule & Scale Engineering Co (SR & SECO) | USA | - | - | S | | |
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| Smith-Corona-Marchant (SCM) | USA | 1960s | - | E | | |
| Società Anonima Costruzioni Meccaniche e Affini (SACMA) | ITA | 1948 | - | M | - | |
| Società Anonima Macchine Addizionatrici e Contabili (SAMAC) | ITA | <1951 | - | M | | |
| Società Italiana Commercio Macchine Ufficio (SICMU) | ITA | - | - | M | - | |
| Società Italiana Macchine Aziendali Stiatti (SIMAS) | ITA | >1930 | - | M | | |
| Società Italiana Washington | ITA | 1930 | - | S | | |
| Società Scientifica Radio Brevetti Ducati | ITA | 1926 | - | M | | |
| Société Desjardins | FRA | - | - | S | | |
| Societé Industrielle des Métaux Manufacturés S.A. (SIMEX) | SWI | 1955 | - | M | - | |
| Societé Industrielle des Téléphones | 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-Ramenskoye | RUS | - | - | S | - | |
| Soviet-SPZ | RUS | - | - | S | | |
| Soviet-STP VMP | RUS | - | - | S | | |
| Soviet-UGK | RUS | - | - | S | | |
| Sozzi Angelo & Co. | ITA | - | - | E | | |
| Sozzi-Inzadi S.A. | ITA | - | - | M | - | |
| Spalding, C.G. | USA | 1884 | - | M | - | |
| Speedee | Chadwick | JAP | - | - | M | |
| Sperry | Keuffel & Essert | USA | - | - | S | |
| Spezial | GER | 1925 | - | M | - | |
| Staedtler-Mars | GER | 1970s | - | S | | |
| Staffel, Israel Abraham | 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 | | |
| Stanhope,Charles (aka Viscount Mahon) | UK | 1775 | - | M | | |
| Star | Accounting Machine Company Inc. | USA | 1922 | - | M | - |
| STAR | JAP | - | - | S | - | |
| Stark, A. | USA | 1884 | - | M | - | |
| Stchetmasch Penza | RUS | 1928 | 1960 | M | | |
| Stchoty | RUS | - | - | B (M) | | |
| Steffens | GER | 1790 | - | M | - | |
| Steiner | ITA | >1950 | - | ? | - | |
| Steinmann, Albert | SWI | 1930 | 1937 | A | - | |
| Stephens | USA | - | - | S | | |
| Sterling Plastics | USA | 1965 | 1968 | A, S | | |
| Stern, Abraham | POL | 1814 | - | M | - | |
| Stettner, ALbert | GER | 1882 | - | M | | |
| Stevenson, R. | UK | - | - | S |  | |
| Stiatti | SIMAS | ITA | <1958 | 1959 | M | - |
| Stima | Albert Steinman | SWI | 1930 | - | M, A | |
| Strasser & Rohde | GER | 1875 | 1951 | M | | |
| Suan-Pan | CHN | 1100 | 1996 | B, M | - | |
| Sum-A-Graph | Sun Typewriter Co. | USA | - | - | M | - |
| Sumadoras Comercial S.L. | SPA | 1934 | - | S | | |
| Sumat | Addimult | GER | ~1950 | - | A | |
| Sumax | Addimult | GER | - | - | A | |
| Sumit | USA | 1959 | - | M | - | |
| Sumlock | Bell Punch | 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 | Agefi | GER | 1924 | - | M | |
| Summus | Eckelmann | GER | 1906 | - | M | - |
| SUN | Seidel & Naumann | GER | - | - | M | - |
| Sun Hemmi | Hemmi Jirou & Co. | JAP | - | - | S | |
| Sun Typewriter Co. | USA | - | - | M | - | |
| Sundstrand Adding Machine Co. | USA | 1914 | 1962 | M | | |
| Super-Simplex | F.D. | ITA | 1920s | - | M | |
| Supra | Addimult | SWI | >1920 | - | M | - |
| Supremathic | Stephens | FRA | - | - | S | |
| Surot | Schubert und Rother | GER | 1920 | - | M | - |
| Svecia | Ernst Schuster | GER | - | - | M | - |
| Swem, L.W. | USA | 1885 | - | M | - | |
| Swift | Addipresto | HON | 1975 | 1985 | M | |
| Swift Business Machines Corp. | USA | >1950 | - | M | - | |
| Swinston | USA | - | - | S | | |
| Sylvania (Geneva) | SWI | 1965 | - | A | | |
| Szyldy | POL | - | - | A | - | |
| T | |||||||
| Tacro | JAP | 1960s | - | S | | |
| Taeggi-Piscicelli, Roberto | ITA | 1903 | - | M | - | |
| Taiyo Calculating Machine Co., Ltd. | JAP | 1955 | - | M | | |
| Tamaya & Co. | JAP | ~1930 | - | S | | |
| Tappit | Allan Bromley | UK | 1930s | - | A | |
| Tarber | ARG | 1950 | - | M | | |
| Tarema | H.W. Ebmeyer | GER | <1910 | - | A | - |
| Tasco | USA | - | - | A | | |
| Tasma | Thaleswerke GmbH | GER | 1924 | - | M | |
| Tavernier-Gravet | FRA | >1867 | - | S | | |
| Taylorix | GER | >1920 | >1960 | M, E | | |
| Techinco | ? | 1958~ | - | M | | |
| Technical Sales | UK | ~1970 | - | S | | |
| Technico | ? | - | - | M | - | |
| Technoimpex | HUN | ~1970 | - | S | | |
| Tecnostyl | ITA | - | - | S | | |
| Teetor Adding Machine Co. | USA | 1910 | - | A, E | - | |
| Teetzmann and Company GmbH | GER | 1912 | - | M | - | |
| Tehnolemn srl | ROM | 1950s | - | S | | |
| Teledyne Post | JAP | - | - | S | | |
| Teledyne Post | Hemmi | USA | 1970s | - | S | |
| Telefongyár Rt. (Terta) | HUN | 1933 | 1938 | S | | |
| Tesa | SWI | 1946 | - | S |  | |
| Thacher, Edwin | USA | 1872 | - | S | | |
| Thales | Thaleswerke GmbH | GER | 1911 | 1965 | M, E | |
| Thälmann-Werk VEB | GER | - | - | M | - | |
| Thatcher | Keuffel & Esser Co. | USA | 1881 | - | S | |
| The Arithmograph Co. | Arithmograph | USA | 1890 | 1920 | M | - |
| The Book-Keeper Publishing Co. | USA | 1904 | - | M | - | |
| The Calculating and Engineering Co. | UK | - | - | ? | - | |
| The Eckel Co. | USA | 1950s | - | S | | |
| The Fingertip System Co. | USA | <1936 | - | A | | |
| The Marbel Blood Calculator Co. | USA | 1930s | - | M | | |
| The Precision Instrument Co. (PIC) | UK | 1901 | - | S | | |
| The Shires Multaddiv Machine Co. | USA | 1906 | - | M | | |
| The Techical Standard | UK | - | - | S | | |
| The Technical | UK | ~1930 | - | S | | |
| Thedenat-Lepetit | Etablissements A. Lepetit | FRA | - | - | S | |
| Theo Müggli | SWI | 1908 | 1951 | M, E | - | |
| Thiemann | GER | 1960s | - | A | - | |
| Thomas, Charles Xavier | FRA | 1820 | 1878 | M | - | |
| Thomlinson | UK | - | - | S | | |
| Thornton, A.G. | UK | 1880 | - | S | | |
| Tianjin Gong Nong Bing | CHN | - | - | S | | |
| Tianjin Squirrel | CHN | - | - | S | | |
| Tianjinshi Hongxing Gongchang | CHN | 1967 | 1978 | M | - | |
| Tiger | Tiger Calculating Machines, Ohmoto Tekko | JAP | 1930 | 1960 | M | - |
| Tiger Calculating Machines | JAP | 1930 | 1960 | M | - | |
| Tiko | ? | 1930 | 1965 | M, E | | |
| TIM Unitas GmbH | GER | 1907 | 1925 | M, E | - | |
| Tim-Add | Gutschow & Company | GER | - | - | M | - |
| Time is Money (TIM) | Ludwig Spitz & Co. | GER | 1923 | - | M | |
| Tochmash | RUS | - | - | S | | |
| Todd Protectograph Co. | USA | 1921 | 1927 | M | | |
| Tokyo Electric Co., Ltd. (TEC) | JAP | 1950s | - | M | | |
| Tom Thumb Products | Western Stamping Co. | USA | 1950s | - | A | |
| Tomlinson, Henry W. | USA | - | - | S | | |
| Topoplastic | FRA | 1960 | - | S | | |
| Torchi, Luigi | ITA | 1834 | - | M | - | |
| Torpedo-Werke AG | GER | 1896 | 1967 | M | | |
| Toshiba Corp. | JAP | - | - | M | - | |
| Totalia | Lagomarsino, FAI | ITA | <1958 | 1976 | M, E | |
| Totalis | ? | - | - | M | - | |
| Touchet | FRA | - | - | S | | |
| Tourtel Adding Machine Syndicate, Ltd. | UK | 1911 | - | M | - | |
| Tower | GER | - | - | E | - | |
| Toyo | JAP | - | - | S | - | |
| Trebla | Albert Steinman | SWI | 1941 | - | A | - |
| Trio GmbH | GER | <1908 | - | M | | |
| Triumph Precision Machine Co. | USA | 1910 | > 1970 | M | - | |
| Triumph Werke AG | GER | 1970< | - | E | | |
| Triumphator | Triumphator Werke, Leipziger Röhrenwerke | GER | <1903 | - | M | |
| Triumphator-Werk Heer & Co. | GER | 1903< | - | M | | |
| Tröger, Emil | GER | - | - | S | | |
| Tröger, Hans | GER | - | - | S | | |
| Troncet, Louis | FRA | 1891 | - | A | - | |
| Tru-Bilt | A&W Products Co. | USA | 1970s | - | S | |
| Tschebicheff ->(Chebychev) | RUS | 1882 | - | M | - | |
| TU | RUS | 1972 | - | S | | |
| Tvornica Racunskih Strojeva (TRS) | YOU | 1948 | - | M | | |
| Twentieth Century Calculator | ? | 1905 | - | M | - | |
| Type-Adder Corp. | USA | 1921 | - | M | - | |
| Tyrell, John | UK | 1830 | - | M | - | |
| U | |||||||
| U.S. Blue | Hemmi | USA | - | - | S | |
| Uchida Yoko | JAP | - | - | S | | |
| Ugrich, J. | GER | <1907 | - | S | | |
| Uhrenfabrik Werner | GER | 1907 | - | M | | |
| Ultra | Oerlikon Bührle | SWI | <1958 | 1962 | E | |
| Underwood Sundstrand | Underwood | USA | 1914 | 1962 | M, E | - |
| Underwood Typewriter Co. | USA | 1874 | 1973 | M, E | | |
| Ungarische Rechen- und Schreibmaschinenfabrik AG | HUN | <1912 | - | M | | |
| Unical AG | SWI | 1943 | 1949 | A | | |
| Union Instruments | USA | - | - | S | - | |
| Union Nationale Inter Syndicale (UNIS) | FRA | - | - | S, A | | |
| Unique Slide Rule Company | UK | 1920 | 1975 | S | | |
| Unitrex | Eiko | JAP | - | - | E | |
| Universal Adding Machine Co. | USA | 1904 | 1910 | M | - | |
| Urania-Vega | Clemens Müller | GER | 1920 | - | M | - |
| Urtzberger | ? | 1866 | - | M | - | |
| Utax-Ricoh | Ricoh | JAP | 1969 | 1973 | E | - |
| UTO | DEN | 1950s | - | S | | |
| V | |||||||
| V&E Manufacturing Co., Inc. (VEMCO) | Pickett | USA | 1970s | - | S | |
| Valiant | JAP | 1960 | - | A | - | |
| Vallot | FRA | - | - | S | | |
| Valmet AB | FIN | >1950 | >1960 | E | | |
| Valtion kustannusliike Kirja | RUS | 1930s | - | M | | |
| Vamco | Victor Adding Machine Co. | USA | 1928 | - | M | |
| VEB BMW (-> Ascota) | GER | - | - | M | - | |
| VEB Büromaschinenwerk Sömmerda | GER | - | - | M, E | - | |
| VEB Electro-Apparate-Werke | GER | - | - | S | | |
| VEB Feinwerktechnik Dresden | GER | - | - | M | | |
| VEB Madix Feinwerktechnik | GER | - | - | M | | |
| VEB Mantissa | GER | ~1975 | - | 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 | | |
| VEK | BUL | 1950s | - | S |  | |
| Venza | ITA | - | - | S | | |
| Verea, Ramon | SPA | >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 | | |
| Voss, Heinrich | GER | 1930s | - | A | | |
| Votam | Ehrich & Gratz | GER | 1922 | - | M | - |
| VVPVS | BUL | 1950s | - | S |  | |
| W | |||||||
| W. Ball & Co. | GER | - | - | S |  | |
| W.F. Stanley & Co. | UK | 1930s | - | M, S | | |
| W.H. Bayley & Co Ltd. | UK | 1880 | 1920 | M | - | |
| 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 | USA | - | - | S | - |
| Walther Werke | GER | 1886 | 1970 | M, E | | |
| Walther, Alwin | Technische Hochschule Aachen | GER | 1957 | - | D | |
| Wanderer-Werke AG | GER | 1896 | > 1969 | M, E | | |
| Ward | USA | - | - | M, E | - | |
| Wataya | JAP | ~1950 | - | A | | |
| WEB Metallbau und Labormobelwerkx Apolda | GER | - | - | S | | |
| Webb, Charles Henry | USA | 1868 | 1889 | A | | |
| Weems & Plath | USA | 1960s | - | S | | |
| Weidenmüller, Günter | VEB Archimedes Rechenmaschinenfabrik Glashütte | GER | 1950s | - | D | - |
| Weinel, Ernst (-> Friedrich-Schiller University Jena) | GER | - | - | D | - | |
| Weiskopf and Hetschko Rechenmaschinenbau AG | GER | 1921 | - | M | | |
| Weiskopf, Max | GER | - | - | M | - | |
| Wellington | UK | 1845 | - | S | | |
| Wembley | Industria Argentina | ARG | - | - | A | - |
| Wen Hua | Tianjinshi Hongxing Gongchang | CHN | 1952 | - | M | - |
| Werner, Karl | GER | 1861 | 1913 | M | | |
| Wertheimber, David Isaac | UK | 1843 | - | M | - | |
| Wescosa | USA | - | - | A | | |
| Wetzer, H. | GER | <1906 | - | M | - | |
| WH Harling Ltd. | UK | 1854 | 1964 | S | | |
| Whetmore | USA | 1916 | - | M | - | |
| White & Gillespie (W&G) | AUS | 1910 | - | S | | |
| White Adding Machine Co. | USA | 1916 | - | M | | |
| Whitehead & Hoag | USA | 1940s | - | SP | | |
| Wiberg, Martin | SWE | 1860~ | - | D | | |
| Wiljon Technik-Art | UK | - | - | S | | |
| Willsonn Sonney | USA | ~1966 | - | SP | | |
| Willy Feiler GmbH | GER | <1962 | > 1968 | E | | |
| Wilson, W. | UK | 1900 | - | S | | |
| Winkler, Helmut | Technische Hochschule Ilmenau | GER | 1954~ | - | D | - |
| Winslow | Henry W. Tomlinson | USA | 1904 | 1931 | S | |
| Winter Calculating Machine | USA | 1859 | - | M | - | |
| Wizard Werke GmbH | GER | 1945 | 1980 | A | | |
| Wolters-Noordhoff | HOL | 1970s | - | S | | |
| Wolverine Supply and Manufacturing Co. | USA | 1950s | - | M | | |
| Wrenn Adding Machine Co. | USA | 1912 | - | M | - | |
| Württembergische Uhrenfabrik Bürk Söhne | GER | 1910 | - | M | | |
| X | |||||||
| X-Matic | ITA | 1956 | - | M | | |
| XxX | Seidel & Naumann | GER | 1906 | 1932 | M | |
| Y | |||||||
| Y.A. Chauvin | Ateliers Vaucanson | FRA | 1950s | - | M | |
| Yabsley, G.M. | AUS | - | - | S | | |
| Yazu | Yazu Jido Soroban | JAP | 1902 | - | M | |
| Yokogawa Electric Works (YEW) | JAP | >1964 | - | SP | | |
| Z | |||||||
| Zagreb | Tvornica Racunskih Strojeva (TRS) | YOU | - | - | M |  |
| Zähringer, Johann (-> Adix) | GER | - | - | A | | |
| Zaklady Metalowe | POL | 1959 | - | M | | |
| Zanaka, Shohe | JAP | 1893 | - | M | - | |
| Zbrojovka Brno a.s. (ZBA) | CZE | <1958 | 1971 | E | - | |
| Zedak, Jacob | ISR | ~1942 | - | M | | |
| Zeuthen & Aargard A/S | Gebr. Karlsen | DEN | - | - | M | - |
| Zodiak Instruments Sales | Relay/Ricoh | USA | - | - | S | |
| Zolnay Endre | HUN | 1939 | - | M | | |
| Zulaica y Cia | SPA | - | - | S | | |
(c) epocalc 2012