Piccardi
{{PatentInfo |Inventor=Robert W. Randolph |Assignee=The Parker Pen Company |Country=US |ApplicationNum=620442 |ApplicationDate=1945-10-05 |PatentNum=2481874 |PatentDate=1949-09-13 |PriorityDate=1945-10-05 |Titolo=Ball-point writing instrument |Marca=Pa...