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Patent:US1135500


Patent:US 1135500
Title:Tabulating mechanism for adding machines
Date:13.04.1915
Place:Detroit
Country:USA
Person:John J. Chapin
Company:Burroughs (P) Adding Machine Comp.
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1135500 (espacenet),  US1135500 (uspto)


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