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Patent:US2707077


Patent:US 2707077
Title:Ten-Key Indexing System
Date:26.04.1955
Place:
Country:USA
Person:Wise, E. L. (P)
Company:Underwood (P)
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2707077 (espacenet),  US2707077 (uspto)


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Aus der Patentschrift US2707077