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Patent:US2091778


Patent:US 2091778
Title:Keyboard construction and key
Date:31.08.1937
Place:Chicago
Country:USA
Person:Garbell, Max (P)
Company:Victor (P) Adding Machine Co.
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Keywords:
Link to the patent office:
(without guarantee)
 US2091778 (espacenet),  US2091778 (uspto)


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