Piccardi
{{PatentInfo |Inventor=John C. Wahl |Assignee=Eversharp Inc. |Country=US |ApplicationNum=558144 |ApplicationDate=1944-10-11 |PatentNum=2427033 |PatentDate=1947-09-09 |PriorityDate=1944-09-11 |Titolo=Mechanical ink pencil |Marca=Eversharp |Descrizione=P...