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Patent:US3259311


Patent:US 3259311
Title:Calendar and calculating device
Date:05.07.1966
Place:
Country:USA
Person:Kenzi Etani, Sama Dominick
Company:
Internal Links:Datumsrechner
Keywords:
Link to the patent office:
(without guarantee)
 US3259311 (espacenet),  US3259311 (uspto)


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Aus der Patentschrift US3259311