Piccardi
{{PatentInfo |Inventor=Craig R. Sheaffer |Assignee=W. A. Sheaffer Pen Company |Country=US |ApplicationNum=517173 |ApplicationDate=1921-11-23 |PatentNum=1712850 |PatentDate=1929-03-14 |PriorityDate=1921-11-23 |Titolo=Pencil |Marca=Sheaffer |Descrizione=...