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Patent:US1512282


Patent:US 1512282
Title:Automatic type and ribbon selecting mechanism and control for writing adding machines
Date:21.10.1924
Place:Harrisburg
Country:USA
Person:Foothorap, Harry Arthur (P)
Company:Elliott-Fisher (P) Comp.
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(without guarantee)
 US1512282 (espacenet),  US1512282 (uspto)


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