Piccardi
{{PatentInfo |Inventor=Philip W. Olson |Assignee=W. A. Sheaffer Pen Company |Country=US |ApplicationNum=345113 |ApplicationDate=1919-12-15 |PatentNum=1385187 |PatentDate=1921-07-19 |PriorityDate=1919-12-15 |Titolo=Pencil |Marca=Sheaffer |Descrizione=Ma...