Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12037997 | Rod pumping surface unit | — | 2024-07-16 |
| 8844626 | Method and apparatus for autonomous oil and gas well down-hole pump leakage testing | — | 2014-09-30 |
| 8562308 | Regenerative hydraulic lift system | Stanley D. Nelsen, J. Dennis Allison | 2013-10-22 |
| 8083499 | Regenerative hydraulic lift system | Stanley D. Nelsen, J. Dennis Allison | 2011-12-27 |