Issued Patents 2022
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11386426 | Invoice invalidation method and apparatus based on blockchain, and electronic device | Hansong XIAO, Dongxu Li, Ping Zhang, Zhen Sun, Jinming Duan +2 more | 2022-07-12 |