Piccardi
{{PatentInfo |Inventor=Leon H. Ashmore |Assignee=The Esterbrook Steel Pen Manfacturing Co. |Country=US |ApplicationNum=38024 |ApplicationDate=1935-08-27 |PatentNum=2228250 |PatentDate=1941-01-14 |PriorityDate=1935-08-27 |Titolo=Manufacture of writing p...