Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5244308 | Apparatus for removing contaminants | — | 1993-09-14 |
| 5167841 | Removing material debris from body of water | — | 1992-12-01 |
| 5013457 | Pressurized backwash filter | — | 1991-05-07 |
| 4957622 | Apparatus for removing sediment from ponds | — | 1990-09-18 |
| 4818419 | Method of removing clogging material from a clogged granular filter medium | — | 1989-04-04 |
| 4818420 | Backwash filter | — | 1989-04-04 |
| 4707277 | Method and apparatus for removing granular material from an aeration basin | — | 1987-11-17 |