Issued Patents 2021
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11143357 | Led display box transport cart | Yongjun Zhang, Guoqiang Li, Jiawei Cao | 2021-10-12 |
| 11145635 | LED display unit | Yongjun Zhang, Guoqiang Li, Yongfeng Guo | 2021-10-12 |
| 11102896 | Anti-impact LED display screen | Yongjun Zhang, Guoqiang Li, Zhiqiang Gao | 2021-08-24 |
| 11071223 | Sealing ring and LED display screen | Yongjun Zhang, Guoqiang Li, Zhiqiang Gao | 2021-07-20 |