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Patent:US1017843


Patent:US 1017843
Title:Transfer mechanism for calculating machines
Date:20.02.1912
Place:Grand Rapids
Country:USA
Person:Barrett, Glenn (P)
Company:Barrett (P) Adding Machine Co.
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1017843 (espacenet),  US1017843 (uspto)


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