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Patent:US1661605


Patent:US 1661605
Title:Adding Machine
Date:18.03.1926
Place:Grand Rapids, Michigan, [[USA}}
Country:USA
Person:Ekman, Andrew (P)
Company:
Internal Links:Addac
Keywords:
Link to the patent office:
(without guarantee)
 US1661605 (espacenet),  US1661605 (uspto)


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