Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11193418 | Double-cylinder internal combustion engine | Kangquan Guo, Junchang Zhang, Hongling Jin, Zhijie Liu | 2021-12-07 |
| 10895281 | Curved groove ball bearing without retainer | Kangquan Guo, Yaohua Hu, Wenjing Zhang, Fang Gu | 2021-01-19 |
| 10610978 | High-efficient energy-saving and surfacing layer well-forming self-shielded flux-covered welding wire and manufacture method | Dashuang Liu, Weimin Long, Ping Wei, Lei Zhang | 2020-04-07 |