Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4306621 | Method for in situ coal gasification operations | Dennis Fischer, Alan E. Humphrey, S. Bruce King, David Whitman | 1981-12-22 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4306621 | Method for in situ coal gasification operations | Dennis Fischer, Alan E. Humphrey, S. Bruce King, David Whitman | 1981-12-22 |