Piccardi
{{PatentInfo |Inventor=David Kahn |Assignee=David Kahn Inc |Country=US |ApplicationNum=108269 |ApplicationDate=1936-10-29 |PatentNum=2105424 |PatentDate=1938-01-11 |PriorityDate=1936-10-29 |Titolo=Pencil lead container |Marca=Wearever |Descrizione=Cont...