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Patent:US1410507


Patent:US 1410507
Title:Calculating Machine
Date:27.01.1917
Place:Virginia Brach, Virginia
Country:USA
Person:Ray, Walter T. (P)
Company:
Internal Links:Ray Subtracto Adder, Figuraytor, Scheibenaddierer
Keywords:
Link to the patent office:
(without guarantee)
 US1410507 (espacenet),  US1410507 (uspto)


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Aus der Patentschrift US1410507