Piccardi
{{PatentInfo |Inventor=Wilfred E. Gerry |Assignee=The Wahl Company |Country=US |ApplicationNum=284885 |ApplicationDate=1919-03-24 |PatentNum=1351564 |PatentDate=1920-08-31 |PriorityDate=1919-03-24 |Titolo=Chart for fountain-pens |Marca=Eversharp |Descr...