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Patent:US1224872


Patent:US 1224872
Title:Calculating-machine
Date:01.05.1917
Place:New York und Orange, NJ
Country:USA
Person:Eward C. Walter
Company:Harry T. Ambrose
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1224872 (espacenet),  US1224872 (uspto)


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