Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4990248 | Reverse osmosis apparatus | Barry M. Brown, Evan A. Edwards, Joseph C. Holzer, Augustine Pavel, Frederick Tone | 1991-02-05 |
| 4922067 | Fluid pressure switch having venting means for dispersing back pressure | — | 1990-05-01 |
| 4920570 | Modular assistive listening system | Joseph D. Kozelsky | 1990-04-24 |
| 4851818 | Electronic controller for a water purifying unit | Barry M. Brown, Evan A. Edwards, William T. Fearnside | 1989-07-25 |