Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10306349 | Earphone | Qigao Chen, Tonghui Guo, Ping Xie | 2019-05-28 |
| 10244302 | Earphone | Ping Xie, Xiaofei FANG | 2019-03-26 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10306349 | Earphone | Qigao Chen, Tonghui Guo, Ping Xie | 2019-05-28 |
| 10244302 | Earphone | Ping Xie, Xiaofei FANG | 2019-03-26 |