Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12370564 | Outdoor surface cleaning apparatus with spray mechanism | Wai C. Lee, Koon For Chung, Weiwei An | 2025-07-29 |
| 11047174 | Digging apparatus | Mark V. Tyson, Andrew Cameron, Dong Lai Gu, Zhi Hau Chen | 2021-06-29 |