Piccardi
{{PatentInfo |Inventor=William R. Cuthbert |Assignee=W. A. Sheaffer Pen Company |Country=US |ApplicationNum=379958 |ApplicationDate=1929-07-22 |PatentNum=1794154 |PatentDate=1931-02-24 |PriorityDate=1929-07-22 |Titolo=Clip for writing instruments |Marc...