Piccardi
{{PatentInfo |Inventor=William W. Stewart |Assignee=William W. Stewart |Country=US |ApplicationNum=504759 |ApplicationDate=1894-03-23 |PatentNum=542450 |PatentDate=1894-05-09 |PriorityDate=1894-03-23 |Titolo=Fountain-pen |Marca=Swan |Descrizione=Sistem...