Piccardi
{{PatentInfo |Inventor=William J. Harrington |Assignee=The Parker Pen Company |Country=US |ApplicationNum=642203 |ApplicationDate=1957-02-25 |PatentNum=2979030 |PatentDate=1961-04-11 |PriorityDate=1957-02-25 |Titolo=Writing instruments |Marca=Parker |...