Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4443322 | Continuous process and apparatus for separating hydrocarbons from earth particles and sand | — | 1984-04-17 |
| 4358373 | Continuous apparatus for separating hydrocarbon from earth particles and sand | — | 1982-11-09 |
| 4311157 | Sonic treating apparatus | Melvin G. DeGrazia, Jr. | 1982-01-19 |