Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4519823 | Air filter assembly having improved clamping means for filter media | Richard E. Evans, Jr. | 1985-05-28 |
| 4481021 | Rotary drum air filter | Richard E. Evans, Jr. | 1984-11-06 |