Issued Patents 2023
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11692401 | Multi-impeller passive-rotating-stirring-type rotary drilling rig for open caissons | Guodong Yi, Shaoju Zhang, Shuyou Zhang | 2023-07-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11692401 | Multi-impeller passive-rotating-stirring-type rotary drilling rig for open caissons | Guodong Yi, Shaoju Zhang, Shuyou Zhang | 2023-07-04 |