Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11962987 | Magnetic circuit of loudspeaker and loudspeaker | Yuewu Shen, Bo Gu, Xiaoqing Wang, Guoqiang Chai | 2024-04-16 |
| 11849277 | Loudspeaker system | Yuewu Shen, Jianfeng Tang, Xiaoqing Wang, Guoqiang Chai | 2023-12-19 |
| 11279278 | Pedestrian warning device having grille cover | Xiafeng Xue, Jianming Zhou, Guoqiang Chai, Kaihua Qian | 2022-03-22 |
| 11089400 | Coaxial loudspeaker | Kaihua Qian, Yuewu Shen, Xiaoqing Wang, Guoqiang Chai | 2021-08-10 |