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Patent:US1123337


Patent:US 1123337
Title:Adding and listing machine
Date:05.01.1915
Place:Chicago und Detroit
Country:USA
Person:Fred F. Main
Company:Burroughs (P) Adding Machine Corp.
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1123337 (espacenet),  US1123337 (uspto)


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