Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4722652 | Hydraulic vane type pump | Li Zhuangyun, Liu Xiangsheng, Zeng Shuang, Wu Hanyi, Wang Yan | 1988-02-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4722652 | Hydraulic vane type pump | Li Zhuangyun, Liu Xiangsheng, Zeng Shuang, Wu Hanyi, Wang Yan | 1988-02-02 |