Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11202139 | Speaker unit for earphone | Ju Heon Ko, Byung Il Min, Yun Uk Ha, Jeong Kwon Park | 2021-12-14 |
| 11102584 | Speaker unit for earphone | Ju Heon Ko, Byung Il Min, Yun Uk Ha, Jeong Kwon Park | 2021-08-24 |
| 11026012 | Earphone including tuning means | Ju Heon Ko, Byung Il Min, Jeong Kwon Park | 2021-06-01 |