Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10975628 | Drill bit nozzle and drill bit | Yuehua Xu, Weixiong Wang, Jianghe Luo, Runan Zhang | 2021-04-13 |
| RE48455 | Rolling cutter | Yuelin Shen, Youhe Zhang, Zhou Yong, Madapusi K. Keshavan | 2021-03-02 |