Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6572289 | Pushbutton structure of keyboard | Chih Lung Lo, Ching-Chiang Yu | 2003-06-03 |
| 6570113 | Key switch | Ching-Chiang Yu | 2003-05-27 |
| 6489579 | Key switch | Chih Lung Lo, Ching-Chiang Yu | 2002-12-03 |