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Patent:US2436352


Patent:US 2436352
Title:Calculating Device
Date:17.02.1948
Place:
Country:USA
Person:Downs, A. B., Jr. (P)
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2436352 (espacenet),  US2436352 (uspto)


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Aus der Patentschrift US2436352