Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851818 | Electronic controller for a water purifying unit | Evan A. Edwards, William T. Fearnside, Henry L. West | 1989-07-25 |
| D301913 | Water purifier unit | Martin Wilson | 1989-06-27 |