Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4990248 | Reverse osmosis apparatus | Barry M. Brown, Evan A. Edwards, Joseph C. Holzer, Augustine Pavel, Henry L. West | 1991-02-05 |
| 4955555 | Leader-retracting film magazine and method for enclosing film | Charles W. Pierson | 1990-09-11 |
| 4909934 | Water purification system | Barry M. Brown, Evan A. Edwards | 1990-03-20 |