Piccardi
{{PatentInfo |Inventor=John C. Wahl |Assignee=The Wahl Company |Country=US |ApplicationNum=552093 |ApplicationDate=1922-04-13 |PatentNum=1465957 |PatentDate=1923-08-28 |PriorityDate=1922-04-13 |Titolo=Clip for mechanical pencils |Marca=Eversharp |Descr...