Piccardi
{{PatentInfo |Inventor=Otto E. Weidlich |Assignee=Otto E. Weidlich |Country=US |ApplicationNum=264251 |ApplicationDate=1905-06-08 |PatentNum=818803 |PatentDate=1906-04-24 |PriorityDate=1905-06-08 |Titolo=Fountain pen |Marca=Weidlich |Descrizione=Sistem...