Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814094 | Oil recovery method utilizing highly oxyalklated phenolic resins | Charles M. Blair, Jr., Raymond P. Olsen | 1989-03-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814094 | Oil recovery method utilizing highly oxyalklated phenolic resins | Charles M. Blair, Jr., Raymond P. Olsen | 1989-03-21 |