Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11530900 | Sighting system | Chia-Kan Chang, Chia-Chi Tang | 2022-12-20 |
| 10495415 | Sight | Chia-Kan Chang, Sung-Po Cheng | 2019-12-03 |
| 10132594 | Bi-reticle sight | — | 2018-11-20 |
| 8100383 | Valve assembly | — | 2012-01-24 |