Piccardi
{{PatentInfo |Inventor=Arthur Winter |Assignee=Arthur Winter |Country=US |ApplicationNum=743673 |ApplicationDate=1934-09-12 |PatentNum=2028855 |PatentDate=1936-01-28 |PriorityDate=1934-09-12 |Titolo=Mechanical pencil |Marca=Dictator |Descrizione=Matit...