Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D568947 | Helicopter | Chi Pok Billy Wai | 2008-05-13 |
| D554040 | Helicopter propeller | Chi Pok Billy Wai | 2007-10-30 |
| D552531 | Helicopter propeller | Chi Pok Billy Wai | 2007-10-09 |
| D546269 | Helicopter propeller | Chi Pok Billy Wai | 2007-07-10 |
| D545755 | Helicopter | Chi Pok Billy Wai | 2007-07-03 |
| D544825 | Helicopter propeller rotor | Chi Pok Billy Wai | 2007-06-19 |