Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861498 | Backwash system for filter-thickeners | — | 1989-08-29 |
| 4436633 | Filtration thickening method and apparatus | David Laing | 1984-03-13 |
| 4194976 | Gravitational separator having membrane baffles therein | — | 1980-03-25 |