Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6715962 | Assembly and floatation method for drilling drivepipe | William Strong | 2004-04-06 |
| 6626248 | Assembly and method for jarring a drilling drive pipe into undersea formation | Arley G. Lee | 2003-09-30 |
| 5595244 | Hydraulic jar | — | 1997-01-21 |
| 5447196 | Hydraulic jar | — | 1995-09-05 |
| 5431221 | Jar enhancer | Arthur W. Neeks | 1995-07-11 |
| 5425430 | Jar enhancer | — | 1995-06-20 |
| 5288271 | Constant velocity universal joint assembly for downhole motor | Sharon Nelson | 1994-02-22 |
| 5174393 | Hydraulic jar | Elmer J. Volmert, Arthur Warren Meeks | 1992-12-29 |