Piccardi
{{PatentInfo |Inventor=Andreas Bienenstein |Assignee=The Conklin Pen Manufacturing Company |Country=US |ApplicationNum=422129 |ApplicationDate=1930-01-20 |PatentNum=1917423 |PatentDate=1933-07-11 |PriorityDate=1930-01-20 |Titolo=Plunger type pen |Marca...