Piccardi
{{PatentInfo |Inventor=Donald H. Young |Assignee=Waterman Pen Company Inc. |Country=US |ApplicationNum=532970 |ApplicationDate=1955-09-07 |PatentNum=2782762 |PatentDate=1957-02-26 |PriorityDate=1955-09-07 |Titolo=Snap-action cap for fountain pen or the...