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Patent:US1909770


Patent:US 1909770
Title:Combined typewriting, bookkeeping and card-perforating machine
Date:16.05.1933
Place:Brooklyn und New York
Country:USA
Person:Kurowski, Alfred (P)
Company:Underwood Elliott-Fisher (P) Comp.
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Link to the patent office:
(without guarantee)
 US1909770 (espacenet),  US1909770 (uspto)


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