Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D530030 | Telescopic light device | — | 2006-10-10 |
| D509611 | Solar powered flashlight | — | 2005-09-13 |
| 6922901 | Light leveling device having remote control | Shu-Chen Chang | 2005-08-02 |
| D504833 | Laser leveling device | — | 2005-05-10 |