Piccardi
{{PatentInfo |Inventor=Craig R. Sheaffer, William R. Cuthbert |Assignee=W. A. Sheaffer Pen Company |Country=US |ApplicationNum=351502 |ApplicationDate=1929-04-01 |PatentNum=1900669 |PatentDate=1933-03-07 |PriorityDate=1929-04-01 |Titolo=Pencil |Marca=S...