Piccardi
{{PatentInfo |Inventor=William P. De Witt |Assignee=De Witt - La France Co. |Country=US |ApplicationNum=530741 |ApplicationDate=1922-01-21 |PatentNum=1517411 |PatentDate=1924-12-02 |PriorityDate=1922-01-21 |Titolo=Fountain-pen casing and cap therefor |...