Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4956634 | City tie line connection for fire alarm system | — | 1990-09-11 |
| 4954809 | Continuity-isolation testing for class A wiring in fire alarm system | Simon Carter | 1990-09-04 |
| 4929924 | Electronic alarm horn | William P. Buyak, Bruce V. Testa | 1990-05-29 |
| 4571586 | Alarm console controls | — | 1986-02-18 |
| 4513284 | Console priority control | — | 1985-04-23 |
| 4506253 | Supervisory and control circuit for alarm system | Irving Mande, George W. Killian | 1985-03-19 |
| 4506254 | Alarm system with detectors and signaling devices on the same cable pair | Irving Mande | 1985-03-19 |
| 4499453 | Power saver circuit for audio/visual signal unit | — | 1985-02-12 |
| 4280123 | Multitone signaling device | Herbert W. McCord, Vaclav O. Podany | 1981-07-21 |
| 4198625 | Dual alarm detection on single loop | Irving Mande | 1980-04-15 |