Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4385784 | Method for forming an in situ oil shale retort | — | 1983-05-31 |
| 4370003 | Temporary gas seal for gas level drift of an in situ oil shale retort | Thomas E. Ricketts | 1983-01-25 |
| 4185871 | In-situ retorting system | K. Malcolm Clews | 1980-01-29 |