Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11567230 | Direction-finding and positioning system of electromagnetic emission of coal or rock fracture | Dazhao Song, Xueqiu He | 2023-01-31 |
| 11397236 | Method of locating coal-rock main fracture by electromagnetic radiation from precursor of coal-rock dynamic disaster | Dazhao Song, Xueqiu He, Zhenlei Li, Quan Lou, Anhu Wang | 2022-07-26 |