Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4442005 | Method of and apparatus for the biological decontamination of waste water | — | 1984-04-10 |
| 4276174 | Control of sludge temperature in autothermal sludge digestion | Raymond Francis Drnevich | 1981-06-30 |