Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869318 | Annulus valve for concentric tubing hangers | — | 1989-09-26 |
| 4474236 | Method and apparatus for remote installations of dual tubing strings in a subsea well | — | 1984-10-02 |
| 4469181 | Adjustable conductor guide assembly for sub-sea wells and methods and tools for adjustment thereof | — | 1984-09-04 |