Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5587067 | Wastewater treatment apparatus | — | 1996-12-24 |
| 4818391 | Integral Clarifier | — | 1989-04-04 |
| 4652371 | Integral clarifier | — | 1987-03-24 |
| 4530762 | Anaerobic reactor | — | 1985-07-23 |
| 4303517 | Liquid treatment apparatus | Roger N. Crathern | 1981-12-01 |
| 4272369 | Liquid treatment apparatus | — | 1981-06-09 |