Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7304295 | Method and system of detecting eccentricity and up/down movement of a code wheel of an optical encoder set | Yeoh Chin Heong, Tai Chong | 2007-12-04 |
| 7199791 | Pen mouse | — | 2007-04-03 |