Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6138774 | Method and apparatus for drilling a borehole into a subsea abnormal pore pressure environment | Darryl A. Bourgoyne, Tammy T. Bourgoyne | 2000-10-31 |
| 4310050 | Well drilling apparatus | — | 1982-01-12 |
| 4310058 | Well drilling method | — | 1982-01-12 |