Piccardi
{{PatentInfo |Inventor=Amos F. Bumpus |Assignee=The Parker Pen Company |Country=US |ApplicationNum=162828 |ApplicationDate=1927-01-22 |PatentNum=1720717 |PatentDate=1929-07-16 |PriorityDate=1927-01-22 |Titolo=Magazine pencil |Marca=Parker |Descrizione=...