Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4441985 | Process for supplying the heat requirement of a retort for recovering oil from solids by partial indirect heating of in situ combustion gases, and combustion air, without the use of supplemental fuel | Robert C. Green | 1984-04-10 |