Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5902140 | Child-safe power strip | Samuel Cheung | 1999-05-11 |
| D402976 | Video game controller | — | 1998-12-22 |
| D399824 | Surge protector | Samuel Cheung | 1998-10-20 |
| D399825 | Surge protector | Samuel Cheung | 1998-10-20 |
| D397087 | Surge protector | Samuel Cheung | 1998-08-18 |
| D397088 | Surge protector | Samuel Cheung | 1998-08-18 |