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Patent:US1271677


Patent:US 1271677
Title:Combined type-writing and computing machine
Date:09.07.1918
Place:Lakewood, Ohio, USA
Country:USA
Person:Dennis, A.S. (P)
Company:
Internal Links:Patent:US949979
Keywords:
Link to the patent office:
(without guarantee)
 US1271677 (espacenet),  US1271677 (uspto)


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