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Patent:US1389232


Patent:US 1389232
Title:Combined typewriting and computing machine
Date:30.08.1921
Place:Brooklyn und New York
Country:USA
Person:Lester A. Wernery
Company:Underwood (P) Computing Machine Comp.
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Keywords:
Link to the patent office:
(without guarantee)
 US1389232 (espacenet),  US1389232 (uspto)


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