Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867883 | High-rate biological waste water treatment process using activated sludge recycle | Glen T. Daigger, James R. Borberg | 1989-09-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867883 | High-rate biological waste water treatment process using activated sludge recycle | Glen T. Daigger, James R. Borberg | 1989-09-19 |