Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12188198 | Method for constructing fixed monitoring pile for mining area with high phreatic water level | Hao Li, Biwu Han, Hongxing Guo, Yanfei Xu, Yunfei Yu +3 more | 2025-01-07 |
| 12044531 | Level instrument and method for surveying mining subsidence zone in coal mining area | Bo Xue, Yanfei Xu, Haiyan Cheng, Yanqing Li, Wei Miao +4 more | 2024-07-23 |