Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10989027 | Artificial lift | Kuo-Chiang Chen, Patrick McMullen, David Biddick | 2021-04-27 |
| 10900285 | Lubricating downhole-type rotating machines | David Biddick, Patrick McMullen | 2021-01-26 |