Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6810202 | Apparatus for controlling rotational speed of motor | Chia-Chang Hsu | 2004-10-26 |
| 6737860 | System for controlling rotational speed of fan according to reference clock frequency | Chia-Chang Hsu, Yen-John Chen | 2004-05-18 |