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Patent:US1018371


Patent:US 1018371
Title:Adding-machine
Date:20.02.1912
Place:Detroit
Country:USA
Person:George B. Putnam
Company:Burroughs (P) Adding Machine Co.
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1018371 (espacenet),  US1018371 (uspto)


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