Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11719595 | Testing device and testing system for high-pressure and large-scale gap dynamic sealing performance | Yinshui Liu, Shendan Zhao, Defa Wu, Hao Pang | 2023-08-08 |
| 10683939 | Ocean depth automatic compensation type full-ocean-depth hydraulic control water stop valve | Defa Wu, Chao Li, Yinshui Liu, Qian Cheng, Zhenyao Wang +3 more | 2020-06-16 |