Issued Patents 2020
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10878798 | Earphone with an active noise cancelling feedback microphone arranged at the rear-side of a speaker diaphragm | — | 2020-12-29 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10878798 | Earphone with an active noise cancelling feedback microphone arranged at the rear-side of a speaker diaphragm | — | 2020-12-29 |