Underwood Sundstrand
From Graces Guide
Exhibit at the Bakelite Museum.
1911 David Sundstrand invented an adding machine which was the first to use the arrangement of key which has become standard on calculator and computer keypads.
1927 David and his brother Oscar sold the rights to market and distribute the Sundstrand calculating machine to Underwood-Elliot Fisher Co, a typewriter and office equipment manufacturer. The machines thereafter bore the mark of Underwood Sundstrand.
1930 David died
Oscar joined Underwood and continued developing the Sundstrand adding machine until 1949.
See Also
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Sources of Information
- Retrocalculators [1]