Piccardi
{{PatentInfo |Inventor=Shunichi Nakata |Assignee=Shunichi Nakata |Country=US |ApplicationNum=489134 |ApplicationDate=1965-09-22 |PatentNum=3280797 |PatentDate=1966-10-25 |PriorityDate=1965-01-22 |Titolo=Retractable closure for pen casings |Marca=Plati...