Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836288 | Casing hanger and packoff running tool | — | 1989-06-06 |
| 4836579 | Subsea casing hanger suspension system | Bob C. Hopkins, Don C. Underwood | 1989-06-06 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836288 | Casing hanger and packoff running tool | — | 1989-06-06 |
| 4836579 | Subsea casing hanger suspension system | Bob C. Hopkins, Don C. Underwood | 1989-06-06 |