Piccardi
{{PatentInfo |Inventor=William W. Stewart |Assignee=William W. Stewart |Country=US |ApplicationNum=253953 |ApplicationDate=1881-03-30 |PatentNum=253953 |PatentDate=1882-02-21 |PriorityDate=1881-03-30 |Titolo=Fountain-pen |Marca=Swan |Descrizione=Proto-...