Smith-Corona Marchant Inc.
In 1958 the calculator Company Marchant merged with the Smith Corona Typewriter Company to form Smith Corona Marchant (SCM).
In the early 1970s SCM started marketing electronic calculators made by other companies, but soon started their own manufacture, especially the "Cogito" models. In about 1973, SCM was another casualty of the dramatic drop in prices of calculators and exited the calculator market.
Source : epocalc