Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4781825 | Filter with self-actuating rotating backwash selector | Sidney H. DePriest | 1988-11-01 |
| 4321828 | Radiant heat collector-sensor temperature control system | Thomas J. Mihalcik | 1982-03-30 |