Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4678375 | Covering or liner system and method for constructing the same | Duane W. Gagle, Richard L. Gagle | 1987-07-07 |
| 4435269 | Conversion of lignite to higher quality fuels | — | 1984-03-06 |