Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4790910 | Apparatus for extracting hydrocarbons from tar sands | — | 1988-12-13 |
| 4280892 | Process and apparatus for the separation of hydrocarbons from petroleum bearing materials | — | 1981-07-28 |
| 4187167 | Method and apparatus for the extraction and recovery of hydrocarbons from petroleum bearing materials | William Hodges | 1980-02-05 |