Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12410785 | Equalizer bearing assembly having wedged retainers | Robert G. McDonald | 2025-09-09 |
| 12345250 | Lightweight, lattice structure horsehead for reciprocating pump unit | Brent W. Pickens, Robert G. McDonald | 2025-07-01 |
| 10760386 | Slant well pumping unit | Jeffrey J. Lembcke | 2020-09-01 |
| 10196883 | Long-stroke pumping unit | Clark E. Robison, Benson Thomas, William C. Lane, Jeffrey J. Lembcke, Bryan A. Paulet +3 more | 2019-02-05 |