Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6808165 | Apparatus for mixing and introducing gas into a large body of liquid | David O. Sperber, Jr., Fredric H. Avers, Jack Gorby, Stephen S. Dashew | 2004-10-26 |
| 6464211 | Diffuser assembly | — | 2002-10-15 |
| 6244574 | Dual diffuser assembly | — | 2001-06-12 |
| 5800705 | Heat exchanger for aeration tank | — | 1998-09-01 |
| 5330688 | Flexible diffuser assembly for aeration applications | — | 1994-07-19 |
| 4979679 | U.V. resistant zinc coated PVC or related plastic pipe | — | 1990-12-25 |
| 4474714 | Diffuser apparatus | — | 1984-10-02 |