Issued Patents 2025
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12221859 | Ball-clamp type fall arrester for drill pipe | Xuyong Liu, Guanghong Deng | 2025-02-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12221859 | Ball-clamp type fall arrester for drill pipe | Xuyong Liu, Guanghong Deng | 2025-02-11 |