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Patent:US1311041


Patent:US 1311041
Title:Calculating machine
Date:22.07.1919
Place:Chicago und New York
Country:USA
Person:Carlin, Samuel E. (P)
Company:Underwood (P) Computing Machine Comp.
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Keywords:
Link to the patent office:
(without guarantee)
 US1311041 (espacenet),  US1311041 (uspto)


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