Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4703171 | Lighting control system with infrared occupancy detector | William G. Kahl, Jr. | 1987-10-27 |
| 4510488 | Passive infrared intrusion detector | Herbert N. St. Jean | 1985-04-09 |
| 4460829 | Infrared intrusion detector with response indicator light | Ronald G. Avery | 1984-07-17 |
| 4451734 | Infrared intrusion sensor with selectable radiation patterns | Herbert N. St. Jean | 1984-05-29 |
| 4215271 | Adjustable mirror mount for photoelectric intrusion detector | Philip H. Mudge, William G. Kahl, Jr. | 1980-07-29 |