Piccardi
{{PatentInfo |Inventor=William P. De Witt |Assignee=De Witt - La France Co. |Country=US |ApplicationNum=527321 |ApplicationDate=1922-01-06 |PatentNum=1472963 |PatentDate=1923-11-06 |PriorityDate=1922-01-06 |Titolo=Lever-filler fountain pen |Marca=De Wi...