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Patent:US1309897


Patent:US 1309897
Title:Lock for accumulator mechanism of adding-machines
Date:15.07.1919
Place:Brooklyn und New York
Country:USA
Person:Lasker, William Walter (P)
Company:Powers Accounting Machine Comp.
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Link to the patent office:
(without guarantee)
 US1309897 (espacenet),  US1309897 (uspto)


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