Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12152845 | Lock structure with improved safety, and gun lock | — | 2024-11-26 |
| 10538890 | Hydraulic ship lift with anti-overturning capability and method for using the same | Hongqi Ma, Yaan Hu, Zongliang Zhang, Xianghua Yuan, Zejiang Xiang +31 more | 2020-01-21 |
| 7731343 | Negative pressure ink supply system | — | 2010-06-08 |