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Patent:US1283293


Patent:US 1283293
Title:Calculating machine
Date:29.10.1918
Place:Chicago und Wilmington, DE
Country:USA
Person:Poole, Arthur (P)
Company:Wahl (P) Comp.
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Keywords:
Link to the patent office:
(without guarantee)
 US1283293 (espacenet),  US1283293 (uspto)


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