Piccardi
{{PatentInfo |Inventor=John C. Wahl |Assignee=The Wahl Company |Country=US |ApplicationNum=210515 |ApplicationDate=1918-01-05 |PatentNum=1365754 |PatentDate=1921-01-18 |PriorityDate=1918-01-05 |Titolo=Toggle-joint self-filling pen |Marca=Eversharp |Des...