Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11003414 | Acoustic control system, apparatus and method | Hyeon Sik CHOI, Keun Sang Lee | 2021-05-11 |
| 10986235 | Headset and operating method thereof | Keun Sang Lee, Hyeon Sik CHOI | 2021-04-20 |