Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7061197 | Pivoting and barrier locking operator system | Willis Jay Mullet, Albert W. Mitchell, David B. Davies, Paul J. VanDrunen, James Scott Murray +1 more | 2006-06-13 |
| 5842501 | Pilot operated safety relief valve | Walter W. Powell | 1998-12-01 |
| 5738333 | Relief valve | Neal Scott Murray | 1998-04-14 |
| 5141416 | Plunger for a downhole reciprocating oil well pump and the method of manufacture thereof | Shannon B. Sixkiller | 1992-08-25 |
| 4960173 | Releasable well tool stabilizer | Steven H. Shirk | 1990-10-02 |
| 4433828 | Reactor vessel stud closure system | Stanley R. Spiegelman, Robert B. Salton, Robert W. Beer, Louis J. Malandra | 1984-02-28 |
| 4415036 | Pressure equalizing flapper type safety valve for subterranean wells | Michael A. Carmody | 1983-11-15 |