Issued Patents 2023
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11674392 | Split air cabin ventilation system for construction of tunnel inclined shaft and ventilation method using same | Shuangqin CHEN, Jun Li, Runzhi Jia, Feng Cheng, Jiaqi Li +3 more | 2023-06-13 |
| 11555700 | Quick fixing device for measuring tunnel peripheral convergence and application method thereof | Rui Ren, Jie Li, Yiwei Cui, Zhifeng Wang, Fuxiang Chen +2 more | 2023-01-17 |