Piccardi
{{PatentInfo |Inventor=Juelss David |Assignee=American Lead Pencil Company |Country=US |ApplicationNum=366265 |ApplicationDate=1940-11-19 |PatentNum=2239526 |PatentDate=1941-04-22 |PriorityDate=1940-11-19 |Titolo=Reversible eraser tip |Marca=Venus |Des...