Piccardi
{{PatentInfo |Inventor=William W. Stewart |Assignee=William W. Stewart |Country=US |ApplicationNum=254175 |ApplicationDate=1881-03-16 |PatentNum=254175 |PatentDate=1882-02-28 |PriorityDate=1881-03-16 |Titolo=Reservoir pen-holder |Marca=Swan |Descrizion...