Issued Patents 1982
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4366059 | Anaerobic treatment | William J. Humphrey, James P. Cave | 1982-12-28 |
| 4352738 | Anaerobic filter | George A. Blay | 1982-10-05 |
| 4351729 | Biological filter and process | — | 1982-09-28 |
| 4315823 | Anaerobic treatment | William J. Humphrey, James P. Cave | 1982-02-16 |