Issued Patents 2023
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11745535 | Groove engraving device and groove engraving method | Jianbo Mao, Jie Li | 2023-09-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11745535 | Groove engraving device and groove engraving method | Jianbo Mao, Jie Li | 2023-09-05 |