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Patent:US1421201


Patent:US 1421201
Title:Writing-adding machine
Date:27.06.1922
Place:Harrisburg, PA
Country:USA
Person:Harry A. Foothorap
Company:Elliott-Fisher (P) Comp.
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1421201 (espacenet),  US1421201 (uspto)


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