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Patent:US1569188


Patent:US 1569188
Title:Calculating machine
Date:12.01.1926
Place:Oak Park, IL und Chicago
Country:USA
Person:Johantgen, Oliver David (P)
Company:Victor (P) Adding Machine Co.
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Keywords:
Link to the patent office:
(without guarantee)
 US1569188 (espacenet),  US1569188 (uspto)


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