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Patent:US1003414


Patent:US 1003414
Title:Rotary retarding mechanism for adding machines and like devices
Date:19.09.1911
Place:Grand Rapids
Country:USA
Person:Barrett, Glenn (P)
Company:Barrett (P) Adding Machine Co.
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Keywords:
Link to the patent office:
(without guarantee)
 US1003414 (espacenet),  US1003414 (uspto)


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