Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4610303 | Method of underground gasification of a series of gently dipping and inclined coal seams | Valery Kapralov, Alfei Fedorovich Volk | 1986-09-09 |
| 4573531 | Method of underground gasification of coal seam | Ivan S. Garkusha, Valery Kapralov | 1986-03-04 |