Piccardi
{{PatentInfo |Inventor=John C. Wahl |Assignee=The Wahl Company |Country=US |ApplicationNum=276131 |ApplicationDate=1919-02-10 |PatentNum=1349025 |PatentDate=1920-08-10 |PriorityDate=1919-02-10 |Titolo=Mechanical pencil |Marca=Eversharp |Descrizione=Ma...