Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9140748 | Burn in board, system, and method | Che-Chin Wu | 2015-09-22 |
| 7820093 | Method for processing stamp material | Kam Hung Wan, Hin Wah Wallace Tsang, Kam Kwong Raymond Wan | 2010-10-26 |
| 5438929 | Printing stamp | Kam Hung Wan | 1995-08-08 |