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Patent:US1302032


Patent:US 1302032
Title:Combined type-writing and computing machine
Date:29.04.1919
Place:Hartford CT und New York
Country:USA
Person:William L. Gumprecht
Company:Underwood (P) Computing Machine Comp.
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Keywords:
Link to the patent office:
(without guarantee)
 US1302032 (espacenet),  US1302032 (uspto)


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