Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10386226 | Infrared safety beam system | Geoffrey M. Engelstein, Mohamed Abdelhafez, Ralph Giffone, Andrew Lindsay | 2019-08-20 |
| 9406205 | Method and apparatus for activating and controlling fire and mass notification visual devices | Joseph R. Keller, Joseph Kosich | 2016-08-02 |
| 8675886 | Method and apparatus for providing a splitter in a notification system | — | 2014-03-18 |
| 8265302 | Method and apparatus for providing volume control with DC supervision | Victor E. Cappetta, Jr. | 2012-09-11 |
| 7978089 | Method and apparatus for ground fault detection | Dominic D'Souza | 2011-07-12 |