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Patent:US1847429


Patent:US 1847429
Title:Writing adding machine
Date:01.03.1932
Place:Harrisburg, PA
Country:USA
Person:Foothorap, Harry Arthur (P)
Company:Elliott-Fisher (P) Comp.
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Link to the patent office:
(without guarantee)
 US1847429 (espacenet),  US1847429 (uspto)


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