Piccardi
{{PatentInfo |Inventor=Maurice J. Waldinger |Assignee=Maurice J. Waldinger |Country=US |ApplicationNum=121133 |ApplicationDate=1945-08-01 |PatentNum=D143049 |PatentDate=1947-11-27 |PriorityDate=1945-08-01 |Titolo=Design for a mechanical pencil |Marca=U...