Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4451373 | Ring channel aeration apparatus and method | — | 1984-05-29 |
| 4294696 | Swing diffuser | — | 1981-10-13 |
| 4288394 | Sewage aeration system | Lloyd Ewing, David T. Redmon, Frank L. Schmit, William H. Roche | 1981-09-08 |