Piccardi
{{PatentInfo |Inventor=Jozsef Laszlo Biro |Assignee=Eterpen S. A. |Country=US |ApplicationNum=491207 |ApplicationDate=1943-06-17 |PatentNum=2413904 |PatentDate=1947-01-07 |PriorityDate=1943-04-17 |Titolo=Writing instrument |Marca=Eterpen |Descrizione=P...