Piccardi
{{PatentInfo |Inventor=Paul E. Wirt |Assignee=Paul E. Wirt |Country=US |ApplicationNum=460494 |ApplicationDate=1908-10-31 |PatentNum=978419 |PatentDate=1910-12-13 |PriorityDate=1908-10-31 |Titolo=Fountain-pen |Marca=Wirt |Descrizione=Alimentatore }} ==...