Piccardi
{{PatentInfo |Inventor=Robert H. Hamilton |Assignee=Robert H. Hamilton |Country=US |ApplicationNum=349623 |ApplicationDate=1906-12-27 |PatentNum=897892 |PatentDate=1908-09-08 |PriorityDate=1906-12-27 |Titolo=Fountain pen |Marca=Unbranded |Descrizione=C...