Piccardi
{{PatentInfo |Inventor=Paul E. Wirt |Assignee=Paul E. Wirt |Country=US |ApplicationNum=138725 |ApplicationDate=1903-01-12 |PatentNum=724983 |PatentDate=1903-04-07 |PriorityDate=1903-01-12 |Titolo=Fountain-pen |Marca=Wirt |Descrizione=Alimentatore }} ==...