Piccardi
{{PatentInfo |Inventor=William W. Stewart |Assignee=William W. Stewart |Country=US |ApplicationNum=677779 |ApplicationDate=1898-04-16 |PatentNum=631909 |PatentDate=1899-08-29 |PriorityDate=1898-04-16 |Titolo=Fountain-pen |Marca=Swan |Descrizione=Sistem...