Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11166612 | Cleaning apparatus | — | 2021-11-09 |
| 11008860 | Equipment system for no-roadway no-coal-pillar retained roadway mining method | Manchao He, Shangyuan Chen, Haijiang Zhang | 2021-05-18 |