Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883983 | Switching system for plural load circuit | William J. Lichtenberger | 1989-11-28 |
| 4800633 | Method of making a water level control device | Thomas M. Buckshaw | 1989-01-31 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883983 | Switching system for plural load circuit | William J. Lichtenberger | 1989-11-28 |
| 4800633 | Method of making a water level control device | Thomas M. Buckshaw | 1989-01-31 |