Piccardi
{{PatentInfo |Inventor=Karl Weisser, Morris Levy |Assignee=David Kahn Inc |Country=US |ApplicationNum=502986 |ApplicationDate=1955-04-21 |PatentNum=2951465 |PatentDate=1960-09-06 |PriorityDate=1955-04-21 |Titolo=Retractable writing instrument |Marca=We...