Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6045236 | Twist on/off and adjustable focus flashlight | Eddie Ying-Hoi Lo, Victer Au-Yeung Tin Shun, Roger Q. Smith | 2000-04-04 |
| 4825143 | Digital meter automatic off power supply circuit | — | 1989-04-25 |