Issued Patents 2021
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11085244 | Anti-collapse jet grouting drill bit with bi-directional rib wings, grouting consolidation system and method | Shucai Li, Qingsong Zhang, Guangming Pan, Rentai Liu, Lei Yang +5 more | 2021-08-10 |