Piccardi
{{PatentInfo |Inventor=John Dutchak |Assignee=John Dutchak |Country=US |ApplicationNum=589577 |ApplicationDate=1922-09-21 |PatentNum=1469921 |PatentDate=1923-10-09 |PriorityDate=1922-09-21 |Titolo=Fountain pen |Marca=Unbranded |Descrizione=Sistema di...