Piccardi
{{PatentInfo |Inventor=John G. Liddel |Assignee=Moore Pen Company |Country=US |ApplicationNum=712465 |ApplicationDate=1924-05-24 |PatentNum=1556701 |PatentDate=1925-10-13 |PriorityDate=1924-05-24 |Titolo=Mechanical pencil |Marca=Moore |Descrizione=Mati...