Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4823015 | Electrical interference free projected beam smoke detector | Aaron A. Galvin, Kenneth J. Leff, John N. Schide, Ralph Giffone | 1989-04-18 |
| 4749871 | Self-diagnostic projected-beam smoke detector | Aaron A. Galvin, Kenneth J. Leff, John N. Schide, Ralph Giffone | 1988-06-07 |
| 4687924 | Modular transceiver with adjustable specular member | Aaron A. Galvin, Kenneth J. Leff, John N. Schide, Ralph Giffone | 1987-08-18 |