Issued Patents 2023
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11543034 | Labyrinth sealing device for reducing gas intrusion | Bo Zhang, Zhiguo Wang, Honghu Ji | 2023-01-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11543034 | Labyrinth sealing device for reducing gas intrusion | Bo Zhang, Zhiguo Wang, Honghu Ji | 2023-01-03 |