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{{PatentInfo |Inventor=Robert T. Pollock |Assignee=Pollock Pen Company |Country=US |ApplicationNum=619624 |ApplicationDate=1923-02-17 |PatentNum=1724107 |PatentDate=1929-09-13 |PriorityDate=1923-02-17 |Titolo=Fountain pen |Marca=John Hancock |Descrizi...