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Patent:US1376518


Patent:US 1376518
Title:Combined typewriting and computing machine
Date:03.05.1921
Place:New York
Country:USA
Person:Julius Duckstine
Company:Underwood (P) Computing Machine Comp.
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Keywords:
Link to the patent office:
(without guarantee)
 US1376518 (espacenet),  US1376518 (uspto)


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