Piccardi
{{PatentInfo |Inventor=William W. Stewart |Assignee=William W. Stewart |Country=US |ApplicationNum=209952 |ApplicationDate=1886-08-04 |PatentNum=378986 |PatentDate=1888-03-06 |PriorityDate=1886-08-04 |Titolo=Fountain-pen |Marca=Swan |Descrizione=Proto-...