Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12324939 | Mobile liquid nitrogen fire extinguishing system and method for utility tunnel | Guowei Zhang, Dong Guo, Huaxiang Li, Zheng Li, Zhiwei Zhang +2 more | 2025-06-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12324939 | Mobile liquid nitrogen fire extinguishing system and method for utility tunnel | Guowei Zhang, Dong Guo, Huaxiang Li, Zheng Li, Zhiwei Zhang +2 more | 2025-06-10 |