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{{PatentInfo |Inventor=Benjamin F. Wupper |Assignee=The Parker Pen Company |Country=US |ApplicationNum=407315 |ApplicationDate=1929-11-15 |PatentNum=1917568 |PatentDate=1933-07-11 |PriorityDate=1929-11-15 |Titolo=Fountain pen |Marca=Parker |Descrizione...