Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11008860 | Equipment system for no-roadway no-coal-pillar retained roadway mining method | Manchao He, Jun Yang, Haijiang Zhang | 2021-05-18 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11008860 | Equipment system for no-roadway no-coal-pillar retained roadway mining method | Manchao He, Jun Yang, Haijiang Zhang | 2021-05-18 |