Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4352591 | Pneumatic toroidal weir | — | 1982-10-05 |
| 4292540 | Wind-powered impeller-mixer | Peter A. Freeman | 1981-09-29 |
| 4267038 | Controlled natural purification system for advanced wastewater treatment and protein conversion and recovery | — | 1981-05-12 |