Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6624599 | Compact single-stage electronic ballast circuit for emergency lighting applications | Tsai-Fu Wu, Yung-Chun Wu, Chin-Hsiung Chang | 2003-09-23 |
| 6582273 | Music box transmission mechanism | — | 2003-06-24 |
| 6576821 | Music box transmitting mechanism | — | 2003-06-10 |