Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D292892 | Intrusion detector | Benjamin T. Ronn, Richard M. O'Grady | 1987-11-24 |
| D277652 | Passive infrared intrusion detector unit | William G. Kahl, Jr. | 1985-02-19 |
| 4460829 | Infrared intrusion detector with response indicator light | Richard Settanni | 1984-07-17 |
| 4451733 | Infrared intrusion detector with optical pattern locators | William G. Kahl, Jr. | 1984-05-29 |