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Patent:US2350979


Patent:US 2350979
Title:Calculating machine
Date:13.06.1944
Place:Oakland, CA
Country:USA
Person:Avery, Harold (P) De Witt M. Grimm Frederick N. Schwend
Company:Marchant (P) Calculating Machine Comp.
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Link to the patent office:
(without guarantee)
 US2350979 (espacenet),  US2350979 (uspto)


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