Issued Patents All Time
Showing 76–87 of 87 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4427389 | Toy coin changer | — | 1984-01-24 |
| 4409753 | Powered toy boat | Fun S. Mak | 1983-10-18 |
| 4406084 | Toy car with rubber band motor | — | 1983-09-27 |
| 4397468 | Simulated tin can target game | Johnny S. C. Yuen | 1983-08-09 |
| 4340373 | Spelling machine | Kwok W. Tsui, Sing C. J. Yuen | 1982-07-20 |
| 4297808 | Tethered toy for orbital movement | — | 1981-11-03 |
| 4289109 | Toy air pistol with hollow breech slide | — | 1981-09-15 |
| 4269596 | Toy aeroplane flight simulating console | — | 1981-05-26 |
| 4245425 | Toy horse with mechanism to produce trotting sound | — | 1981-01-20 |
| 4227508 | Toy automatic pistol for ping pong balls | — | 1980-10-14 |
| 4225140 | Target-type shooting toy | Kwok W. Tsui | 1980-09-30 |
| 4193223 | Inertia wheel toy vehicle | Kwok W. Tsui | 1980-03-18 |