Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D760568 | Control line stripping device | George J. Plaisance, III | 2016-07-05 |
| 8496058 | Well fishing method and system | — | 2013-07-30 |
| 8261829 | Well fishing method and system | — | 2012-09-11 |
| 4785895 | Drill bit with wear indicating feature | Joseph W. Stolle | 1988-11-22 |
| 4785894 | Apparatus for detecting drill bit wear | Joseph W. Stolle | 1988-11-22 |
| 4655300 | Method and apparatus for detecting wear of a rotatable bit | Mark S. Ramsey, Joseph W. Stolle | 1987-04-07 |
| 4537457 | Connector for providing electrical continuity across a threaded connection | Leon Robinson | 1985-08-27 |
| 4506729 | Drill string sub with self closing cable port valve | Orien M. Knight, John W. Stoltz | 1985-03-26 |