Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6121881 | Protective mask communication devices and systems for use in hazardous environments | Peter J. LaPlaca, Fred Pulver | 2000-09-19 |
| 5990793 | Firefighters integrated communication and safety system | — | 1999-11-23 |
| 5060308 | Firefighters mask communication system | — | 1991-10-22 |