Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11102896 | Anti-impact LED display screen | Xianfeng Zhang, Yongjun Zhang, Guoqiang Li | 2021-08-24 |
| 11071223 | Sealing ring and LED display screen | Xianfeng Zhang, Yongjun Zhang, Guoqiang Li | 2021-07-20 |