Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8974151 | Constant-resistance large-deformation anchor rod | — | 2015-03-10 |
| 8418526 | System and method for testing gas migration process in coal-rock mass | Chunguang Wang, Haijiang Zhang, Dejian Li | 2013-04-16 |