Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10321220 | Earcushion with acoustic tube | — | 2019-06-11 |
| 10264342 | Open headphone | Xiuhua Duan, Wenlai Zhang | 2019-04-16 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10321220 | Earcushion with acoustic tube | — | 2019-06-11 |
| 10264342 | Open headphone | Xiuhua Duan, Wenlai Zhang | 2019-04-16 |