Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8855795 | Multiple output audio system | Pei-Chen Chang, Chien-Hua Hsu | 2014-10-07 |
| 8001170 | Equalizer system and filtering method | — | 2011-08-16 |
| 7045732 | Pull retainer emergency safety switch | — | 2006-05-16 |