Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4192653 | Novel fuel compositions comprising upgraded solid _and/or semi-solid material prepared from coal | Harold E. Swift | 1980-03-11 |
| 4190518 | Solvent refined coal process | Harold E. Swift | 1980-02-26 |