Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4510797 | Full-bore drill stem testing apparatus with surface pressure readout | Perry DeCuir | 1985-04-16 |
| 4454913 | Safety valve system with retrievable equalizing feature | Kerry D. Jernigan | 1984-06-19 |