Piccardi
{{PatentInfo |Inventor=Emanuel J. Sonn |Assignee=Emanuel J. Sonn |Country=US |ApplicationNum=697823 |ApplicationDate=1933-11-13 |PatentNum=1988878 |PatentDate=1935-01-22 |PriorityDate=1933-11-13 |Titolo=Fountain pen |Marca=Unbranded |Descrizione=Sistem...