Piccardi
{{PatentInfo |Inventor=Roy B. Johns |Assignee=Parker Pen Company |Country=US |ApplicationNum=102483 |ApplicationDate=1936-09-25 |PatentNum=2096044 |PatentDate=1937-10-19 |PriorityDate=1936-09-25 |Titolo=Tube and method of forming the same |Marca=Parker...