Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5425874 | Rotating contactor including cross flow media for the biological treatment of waste water | — | 1995-06-20 |
| 4668387 | Deep submergence rotating biological contactor apparatus | Richard Davie | 1987-05-26 |