Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4921407 | Production pump for high gravity or sand laden oil | — | 1990-05-01 |
| 4749044 | Apparatus for washover featuring controllable circulating valve | Uvon Skipper, E. E. Herod | 1988-06-07 |