Piccardi
{{PatentInfo |Inventor=Walter A. Sheaffer |Assignee=Walter A. Sheaffer |Country=US |ApplicationNum=685273 |ApplicationDate=1912-03-21 |PatentNum=1046660 |PatentDate=1912-12-10 |PriorityDate=1912-03-21 |Titolo=Fountain-pen attachment |Marca=Sheaffer |De...