Issued Patents 2018
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10081999 | Downhole occluder, pressurized sucker rod and operation technique to repair oil pipes | Gangyao Li, Zhongxiang Zhao, Haijun Luan, Yimin Zhang, Junfeng Lv +1 more | 2018-09-25 |