Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5662169 | Cuttings injection wellhead system | — | 1997-09-02 |
| 5653289 | Adjustable jackup drilling system hanger | Iain MacPherson Oswald, Trevor W. J. Park, Calum J. B. Dinnes | 1997-08-05 |