Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6367558 | Metal-to-metal casing packoff | — | 2002-04-09 |
| 5918675 | Close proximity wellheads | Charles D. Bridges | 1999-07-06 |
| 5813468 | Dual casing hanger | — | 1998-09-29 |
| 5732772 | Dual split tubing hanger | Charles D. Bridges | 1998-03-31 |