Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D881971 | Focus follower | Xiheng Shi | 2020-04-21 |
| D868877 | Camera mount | Xiheng Shi | 2019-12-03 |
| 5248328 | Process for preparing rare earth containing hard alloy | Congxun He, Youming Wang, Yunhua Shi | 1993-09-28 |