Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6708493 | Variable ratio of force-enlargement master cylinder of a braking system | Yen-Chieh Mao | 2004-03-23 |
| 6672563 | Ball valve having a magnetic seat sealing device | Chia-Yang Chang, Kuo-Hung Lin | 2004-01-06 |