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Patent:US1248718


Patent:US 1248718
Title:Adding Machine
Date:04.12.1917
Place:
Country:USA
Person:Rinsche, Frank Charles (P)
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1248718 (espacenet),  US1248718 (uspto)


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Aus der Patentschrift US1248718