Piccardi
{{PatentInfo |Inventor=Herman K. Stempel |Assignee=W. A. Sheaffer Pen Company |Country=US |ApplicationNum=250289 |ApplicationDate=1939-01-11 |PatentNum=2180560 |PatentDate=1939-11-21 |PriorityDate=1939-01-11 |Titolo=Writing instrument |Marca=Sheaffer |...