Piccardi
{{PatentInfo |Inventor=Lynn P. Martin |Assignee=W. A. Sheaffer Pen Company |Country=US |ApplicationNum=433520 |ApplicationDate=1954-06-01 |PatentNum=2799247 |PatentDate=1957-07-16 |PriorityDate=1954-06-01 |Titolo=Writing implements |Marca=Sheaffer |Des...