Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10626678 | Reaming device connecting to downhole motor with paralleled driving structure | Yongqing Yin, Yongqi Yin, Yinghui Yao, Xiyuan WANG, Qin Wang | 2020-04-21 |
| 9841240 | Heat exchanger | Xian'an Zhang, Jianliang Wang, Xingmiao Hu, Junjie Li | 2017-12-12 |