Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10848030 | Motor slot wedge with sealing structure and combination device | Shengjun Ma, Chengqian Liu, Xiang Zhao | 2020-11-24 |
| 10794174 | Dynamically self-balancing pressurized borehole-sealing apparatus and method thereof for coal seam gas pressure measurement | Wei Lu, Zhen Liu, Guansheng Qi, Jinliang Li, Dongling Sun +2 more | 2020-10-06 |