Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834889 | Oil and water filter and process for dewatering oil sludge | — | 1989-05-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834889 | Oil and water filter and process for dewatering oil sludge | — | 1989-05-30 |