Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10488645 | Magnification apparatus | — | 2019-11-26 |
| 10466735 | Knob structure | Chia-Kan Chang | 2019-11-05 |
| 10180698 | Knob structure | Chia-Kan Chang | 2019-01-15 |
| 8087198 | Combined illuminated reticle switch and focus knob for sight | Yu-Sheng Lin | 2012-01-03 |