Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4360420 | Distillation and solvent extraction process for rerefining used lubricating oil | Laird C. Fletcher, Harold J. Beard | 1982-11-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4360420 | Distillation and solvent extraction process for rerefining used lubricating oil | Laird C. Fletcher, Harold J. Beard | 1982-11-23 |