Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4313499 | Subterranean gasification of bituminous coal | Shirley C. Tsai, Richard H. Graham | 1982-02-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4313499 | Subterranean gasification of bituminous coal | Shirley C. Tsai, Richard H. Graham | 1982-02-02 |