Piccardi
{{PatentInfo |Inventor=Julius F. Hansen |Assignee=The Wahl Company |Country=US |ApplicationNum=137638 |ApplicationDate=1926-09-25 |PatentNum=1745483 |PatentDate=1930-02-04 |PriorityDate=1926-09-25 |Titolo=Unbreakable writing instrument and method of ma...