Piccardi
{{PatentInfo |Inventor=Charles Dunn |Assignee=Charles Dunn |Country=US |ApplicationNum=160404 |ApplicationDate=1917-04-07 |PatentNum=1359880 |PatentDate=1920-11-23 |PriorityDate=1917-04-07 |Titolo=Self-filling fountain-pen |Marca=Dunn |Descrizione=Sist...