Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5499424 | Cleaning device for hard and flat surfaces | — | 1996-03-19 |
| 4575355 | Toy vehicle activated by moving body part | James S. W. Lee, Kwong-Wai Chow, Ming-Ngar Chow | 1986-03-11 |
| 4547174 | Inertia motors for toy vehicles | James S. W. Lee, Kwong-Wai Chow, Ming-Ngar Chow | 1985-10-15 |
| 4541815 | Toy vehicle | James S. W. Lee, Kwong-Wai Chow, Ming-Ngar Chow | 1985-09-17 |
| 4516954 | Toy vehicle | Kwong-Wai Chow, Ming-Ngar Chow, James S. W. Lee | 1985-05-14 |