Issued Patents 2016
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9438989 | Headphone structure for adjusting audio frequencies | Ping-Tang Lee | 2016-09-06 |
| 9258630 | Coaxial audio speaker using single audio source | Pin-Tang Lee, Shoichi Taniguchi | 2016-02-09 |