Piccardi
{{PatentInfo |Inventor=John C. Wahl, Albert H. Stenersen |Assignee=The Wahl Company |Country=US |ApplicationNum=64485 |ApplicationDate=1925-10-24 |PatentNum=1800330 |PatentDate=1931-04-14 |PriorityDate=1925-10-24 |Titolo=Fountain-pen-filling device |Ma...