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{{PatentInfo |Inventor=Charles R. Keeran |Assignee=Keeran Products Company |Country=US |ApplicationNum=232052 |ApplicationDate=1918-05-02 |PatentNum=1301057 |PatentDate=1919-04-15 |PriorityDate=1918-05-02 |Titolo=Fountain pen |Marca=Eversharp |Descrizi...