Issued Patents 2017
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9820034 | Sound device | Yue Zeng | 2017-11-14 |
| 9648405 | Speaker and mobile communication terminal device using same | Chengliang Wang | 2017-05-09 |
| 9621981 | Speaker box | Chengliang Wang, Jiandong Tian | 2017-04-11 |