Issued Patents 2022
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11353138 | Piston valve core structure with rigid ring surface combined with flexible base surface and method thereof | Jinyuan Qian, Congwei Hou, Zhijiang JIN | 2022-06-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11353138 | Piston valve core structure with rigid ring surface combined with flexible base surface and method thereof | Jinyuan Qian, Congwei Hou, Zhijiang JIN | 2022-06-07 |