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Patent:US1299052


Patent:US 1299052
Title:Combined type writing and computing machine
Date:01.04.1919
Place:Hartford, CT und New York
Country:USA
Person:Andrew W. Steiger
Company:Underwood (P) Computing Machine Comp.
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Keywords:
Link to the patent office:
(without guarantee)
 US1299052 (espacenet),  US1299052 (uspto)


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