Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5365154 | Appliance control system and method | John K. Schneider, Frank W. Keeney, Benjamin H. Weppner | 1994-11-15 |
| 5335545 | Ultrasonic detector with frequency matching | — | 1994-08-09 |
| 5277065 | Detector with ringdown frequency matching | — | 1994-01-11 |