Issued Patents 2021
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11174730 | Frost-resistant assembled initial support structure of tunnel and construction method thereof | Keguo Sun, Weiping Xu, Zhifei Xiao, Mingzhao Yu, Jinhang Qin | 2021-11-16 |