Issued Patents 2020
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10746020 | Vertical lifting type drum coal-mining machine without rocker arm | Yimin Zhang, Yanhui Zhao, Jinrui Zhang, Lisha Zhu, Hangyuan Lv +3 more | 2020-08-18 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10746020 | Vertical lifting type drum coal-mining machine without rocker arm | Yimin Zhang, Yanhui Zhao, Jinrui Zhang, Lisha Zhu, Hangyuan Lv +3 more | 2020-08-18 |