Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12352169 | Hydraulic support with quick response function for coal wall spalling | Lirong Wan, Xiaoqi Ma, Qingliang Zeng, Zhiyuan Sun, Wenqian Xu +2 more | 2025-07-08 |
| 11555351 | Spiral impact drilling machine applicable to rock and soil and construction method | Jinqing Jia, Lihua Zhang, Xing Gao, Xiangsheng Chen, Xiaoping Liao +2 more | 2023-01-17 |