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Patent:US2115870


Patent:US 2115870
Title:Combined typewriting and computing machine
Date:03.05.1938
Place:Westfield, NJ und New York
Country:USA
Person:Pitman, Henry L. (P)
Company:Underwood Elliott-Fisher (P) Comp.
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Keywords:
Link to the patent office:
(without guarantee)
 US2115870 (espacenet),  US2115870 (uspto)


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