Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10364646 | Differential pressure switch operated downhole fluid flow control system | Liang Zhao | 2019-07-30 |
| 10174588 | Differential pressure switch operated downhole fluid flow control system | Liang Zhao | 2019-01-08 |