Piccardi
{{PatentInfo |Inventor=Walter J. Guenther |Assignee=W. A. Sheaffer Pen Company |Country=US |ApplicationNum=310605 |ApplicationDate=1939-12-22 |PatentNum=2241852 |PatentDate=1941-05-13 |PriorityDate=1939-12-22 |Titolo=Receptacle for fountain pens |Marca...