Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11015663 | Lifting device | Zenghai Shan, Lifeng Cao, Yanan Sun, Guangzhi Cao, Qiang Song +1 more | 2021-05-25 |
| 9950912 | Combined counterweight hitching device and method thereof, and counterweight mounting structure | Zhengde Zhang, Haiyan Zhang, Rong Jin, Xiaodong Hu | 2018-04-24 |