Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834853 | Fast pyrolysis reactor and method of enhancing unsaturated hydrocarbon formation | Don Ethington, Ray RILEY | 1989-05-30 |
| 4818604 | Composite board and method | — | 1989-04-04 |