Piccardi
{{PatentInfo |Inventor=Walter A. Sheaffer |Assignee=Walter A. Sheaffer |Country=US |ApplicationNum=180052 |ApplicationDate=1917-07-12 |PatentNum=1284156 |PatentDate=1918-11-05 |PriorityDate=1917-07-12 |Titolo=Pencil |Marca=Sheaffer |Descrizione=Matita ...