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Patent:US2821341


Patent:US 2821341
Title:Multi-Function Repeat Key for Calculating Machines
Date:28.01.1958
Place:
Country:USA
Person:H. L. Barnhardt
Company:Olkon Research
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2821341 (espacenet),  US2821341 (uspto)


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