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Patent:US2082697


Patent:US 2082697
Title:Keying Device
Date:01.06.1937
Place:
Country:USA
Person:I. M. Ingerson
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2082697 (espacenet),  US2082697 (uspto)


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Aus der Patentschrift US2082697