Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6620023 | Model car with tilt and lift suspension | — | 2003-09-16 |
| 5875683 | Controllable gear shifter with lock-in system | Chan Ho Yeung, Mak Tsz Fong, Li Man Chiu | 1999-03-02 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6620023 | Model car with tilt and lift suspension | — | 2003-09-16 |
| 5875683 | Controllable gear shifter with lock-in system | Chan Ho Yeung, Mak Tsz Fong, Li Man Chiu | 1999-03-02 |