Issued Patents 2020
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10844670 | Couplings for well pumping components | William D. Nielsen | 2020-11-24 |
| 10844671 | Low friction and high wear resistant sucker rod string | Fritz C. Grensing, William D. Nielsen, Richard E. Cash, Christopher W. Damschroder | 2020-11-24 |
| 10597949 | Drilling component | William D. Nielsen, Christopher W. Damschroder, Fritz C. Grensing | 2020-03-24 |