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Patent:US2243884


Patent:US 2243884
Title:Adding Machine
Date:03.06.1941
Place:Pittsburgh, Pa.
Country:USA
Person:Ritz, L. J. (P)
Company:Wolverine (P) Supply and Manufacturing Company
Internal Links:Wolverine Adder
Keywords:
Link to the patent office:
(without guarantee)
 US2243884 (espacenet),  US2243884 (uspto)


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Aus der Patentschrift US2243884