Piccardi
{{PatentInfo |Inventor=Paul E. Wirt |Assignee=Paul E. Wirt |Country=US |ApplicationNum=393134 |ApplicationDate=1920-06-30 |PatentNum=1379890 |PatentDate=1921-05-31 |PriorityDate=1920-06-30 |Titolo=Fountain-pen |Marca=Wirt |Descrizione=[[Caricamento a l...