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Patent:US3891142


Patent:US 3891142
Title:Device for Calculating Machines wherein the platen is tapped against the types, to allow for an uniform impression thereof
Date:28.12.1973
Place:Tokyo, Japan
Country:USA
Person:Barozzi, Gianpiero (P), Horeschi, Giancarlo (P)
Company:Citizen (P) Watch Co.
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Link to the patent office:
(without guarantee)
 US3891142 (espacenet),  US3891142 (uspto)


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