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{{PatentInfo |Inventor=David Kahn |Assignee=David Kahn Inc |Country=US |ApplicationNum=45663 |ApplicationDate=1935-10-18 |PatentNum=2075725 |PatentDate=1937-03-30 |PriorityDate=1935-10-18 |Titolo=Writing instrument |Marca=Wearever |Descrizione=Matita m...