Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10928640 | Optical system for assisting image positioning | Jianhua Sun, Yingzi Yang | 2021-02-23 |
| 10767963 | Gun calibrator provided with inner red dot sight | Jianhua Sun | 2020-09-08 |