Issued Patents 2023
Showing 1–1 of 1 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, Yaqiong WANG +3 more | 2023-06-13 |