Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4682656 | Completion apparatus and method for gas lift production | — | 1987-07-28 |
| 4667736 | Surface controlled subsurface safety valve | William D. Rumbaugh | 1987-05-26 |
| 4373583 | Test-system | — | 1983-02-15 |