Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5021766 | Intrusion detection system | Hansjurg Mahler | 1991-06-04 |
| 4743886 | Testing apparatus for intrusion detectors | Peter Steiner, David Kevin Siegwart | 1988-05-10 |
| 4729120 | Method of, and circuit arrangement for, function control of ultrasonic alarm installations | Peter Steiner, David Kevin Siegwart | 1988-03-01 |
| 4727522 | Method of, and circuit arrangement for, function control of ultrasonic alarm installations | Peter Steiner, David Kevin Siegwart | 1988-02-23 |
| 4418335 | Infrared intrusion detector with pyroelectric sensor and charge amplifier | — | 1983-11-29 |