Piccardi
{{PatentInfo |Inventor=William W. Stewart |Assignee=William W. Stewart |Country=US |ApplicationNum=624010 |ApplicationDate=1897-02-12 |PatentNum=588709 |PatentDate=1897-08-24 |PriorityDate=1897-02-12 |Titolo=Fountain-pen |Marca=Swan |Descrizione=Sistem...