Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8512191 | Variable speed control device of a power winch | Yuzhi Xie | 2013-08-20 |
| 8157077 | Clutch device for electric winches | Yuzhi Xie | 2012-04-17 |
| 7857289 | Tapered braking device for electric winches | Yuzhi Xie | 2010-12-28 |
| 7823864 | Plane braking device for electric winches and electric winch | Yuzhi Xie | 2010-11-02 |