Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4289616 | Apparatus for removing suspended solids from an effluent | Richard D. Hallack | 1981-09-15 |
| 4203836 | Method and apparatus for removing precipitated suspended solids from an effluent | Richard D. Hallack | 1980-05-20 |