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Patent:US1237703


Patent:US 1237703
Title:Calculating machine
Date:21.08.1917
Place:New York und Jersey City
Country:USA
Person:Leon Walter Rosenthal Marcus C. Hopkins
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1237703 (espacenet),  US1237703 (uspto)


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