Issued Patents 2018
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10041298 | Detachable combined-type drive key for rotary drilling rig power head | Xiaoliang Li, Ju Luo, Zhonghai Zhang, Jiguang Zhang, Jingwei He | 2018-08-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10041298 | Detachable combined-type drive key for rotary drilling rig power head | Xiaoliang Li, Ju Luo, Zhonghai Zhang, Jiguang Zhang, Jingwei He | 2018-08-07 |