Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886115 | Wireline safety mechanism for wireline tools | Howard R. Kitney | 1989-12-12 |
| 4883119 | Mechanical latching device operated by dead weight and tension | — | 1989-11-28 |
| 4846272 | Downhole shuttle valve for wells | — | 1989-07-11 |
| 4828023 | Mechanical latching device operated by dead weight and tension | — | 1989-05-09 |