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{{PatentInfo |Inventor=Walter Guyot |Assignee=Pen Desk Set Company |Country=US |ApplicationNum=160596 |ApplicationDate=1927-01-12 |PatentNum=1892509 |PatentDate=1932-12-27 |PriorityDate=1927-01-12 |Titolo=Desk set |Marca=Pen Desk Set Company |Descrizi...