Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874393 | Method of producing fuel of relatively higher calorific value from low rank and oxidized coal | Josef A. Mikhlin, deceased, C. Edward Capes, Haresh S. Divanji | 1989-10-17 |