Issued Patents 2019
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10273657 | Variable-speed volume-control direct-drive all-electric hydraulic excavator driving and energy recovery system | Long Quan, Huimin Hao, Jiahai Huang, Xiaohong Han | 2019-04-30 |