Issued Patents 2021
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10900357 | Blowing curtain face ventilation system for extended cut mining using passive regulator | Todor P. Petrov | 2021-01-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10900357 | Blowing curtain face ventilation system for extended cut mining using passive regulator | Todor P. Petrov | 2021-01-26 |