Piccardi
{{PatentInfo |Inventor=Levi D. Van Valenburg |Assignee=Levi D. Van Valenburg |Country=US |ApplicationNum=360493 |ApplicationDate=1907-03-04 |PatentNum=886095 |PatentDate=1908-04-28 |PriorityDate=1907-03-04 |Titolo=Fountain-pen retainer |Marca=Williamso...