Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6239446 | Fluid flow detector | — | 2001-05-29 |
| 5584319 | Electro-optical valve-status supervision switch circuit for fire protection | — | 1996-12-17 |
| 4855718 | Fire detection system employing at least one optical waveguide | Jeffrey G. Cholin | 1989-08-08 |
| 4712096 | Condition responsive detection system and method | Jeffrey G. Cholin, Ray Voorhis | 1987-12-08 |
| 4553031 | Optical fire or explosion detection system and method | Ray Voorhis, Jeffrey G. Cholin | 1985-11-12 |
| 4513202 | Self compensating fire detection device | — | 1985-04-23 |
| 4464575 | Test device for an optical infra red detector | Jeffrey G. Cholin, Ray Voorhis | 1984-08-07 |
| 4241258 | Ultraviolet fire detector | — | 1980-12-23 |
| 4224538 | Series supervision/parallel actuation device | — | 1980-09-23 |
| 4222045 | Capacitive shift fire detection device | — | 1980-09-09 |