Piccardi
{{PatentInfo |Inventor=Herman Pohle |Assignee=Herman Pohle |Country=US |ApplicationNum=732900 |ApplicationDate=1934-06-28 |PatentNum=1977527 |PatentDate=1934-10-16 |PriorityDate=1934-06-28 |Titolo=Four color fountain pen |Marca=Unbranded |Descrizione=P...