Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5682664 | Pressure switch mounting | — | 1997-11-04 |
| 5637843 | Electromechanical programmer/timer | Daniel Charles Johnson, Robert R. Parotto, Gordon B. Spellman, Earl T. Piber | 1997-06-10 |