Piccardi
{{PatentInfo |Inventor=John C. Haring |Assignee=Edward Todd & Co. |Country=US |ApplicationNum=448890 |ApplicationDate=1908-08-17 |PatentNum=940247 |PatentDate=1909-11-16 |PriorityDate=1908-08-17 |Titolo=Polypoint pencil |Marca=Swan |Descrizione=Matita ...