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Patent:US1172485


Patent:US 1172485
Title:Adding machine
Date:22.02.1916
Place:Detroit
Country:USA
Person:Rinsche, Frank Charles (P)
Company:Burroughs (P) Adding Machine Comp.
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Keywords:
Link to the patent office:
(without guarantee)
 US1172485 (espacenet),  US1172485 (uspto)


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