Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11286731 | Pipe racking system | Ying Li, Xiaohu Li, Lin Wang, Aimin Tang, Qionghua Yang +2 more | 2022-03-29 |
| 11028651 | Drilling rig | Rui LUO, Ting Zhang, Qionghua Yang, Yuegang Xu, Guixuan Li +2 more | 2021-06-08 |