Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10144620 | Method and system for positioning engineering machinery work objects | Zenghai Shan, Changjian Zhu, Quan Li, Maofeng Zhu | 2018-12-04 |
| 10081999 | Downhole occluder, pressurized sucker rod and operation technique to repair oil pipes | Xiangsheng Lv, Gangyao Li, Haijun Luan, Yimin Zhang, Junfeng Lv +1 more | 2018-09-25 |