Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11203239 | Traction device and traction method | Shangmin Sun, Hongqi Li, Yuan He, Quanwei Song, Weifeng Yu | 2021-12-21 |
| 11104309 | Fork-arm lift tractor | Yuan He, Jianmin Li, Hongqi Li, Yulan Li, Yuanjing Li +2 more | 2021-08-31 |