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Patent:US1147957


Patent:US 1147957
Title:Calculating machine
Date:27.07.1915
Place:Chicago
Country:USA
Person:Alfred S. McCaskey
Company:McCaskey (P) Electric Calculator Comp.
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Keywords:
Link to the patent office:
(without guarantee)
 US1147957 (espacenet),  US1147957 (uspto)


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