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{{PatentInfo |Inventor=David Kahn |Assignee=David Kahn Inc |Country=US |ApplicationNum=175321 |ApplicationDate=1937-11-18 |PatentNum=2150065 |PatentDate=1939-03-07 |PriorityDate=1937-11-18 |Titolo=Pen desk set |Marca=Wearever |Descrizione=Stiloforo }} ...