Piccardi
{{PatentInfo |Inventor=George S. Walter |Assignee=George S. Walter |Country=US |ApplicationNum=15241 |ApplicationDate=1935-04-08 |PatentNum=2033164 |PatentDate=1936-03-10 |PriorityDate=1935-04-08 |Titolo=Writing pen |Marca=Unbranded |Descrizione=[[Penn...