Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6672563 | Ball valve having a magnetic seat sealing device | Chia-Yang Chang, Ching-Huan Tseng | 2004-01-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6672563 | Ball valve having a magnetic seat sealing device | Chia-Yang Chang, Ching-Huan Tseng | 2004-01-06 |