Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4975684 | Fire detecting system | Mark Jaggi | 1990-12-04 |
| 4647786 | Photoelectric smoke detector and its application | Martin Labhart | 1987-03-03 |
| 4642471 | Scattered radiation smoke detector | Gustav Pfister | 1987-02-10 |
| 4551710 | Method and apparatus for reporting dangerous conditions | Alan Troup, Gustav Pfister | 1985-11-05 |
| 4543815 | Device for the detection of foreign components in a gas and an application of the device | Alan Troup, Sigfrid Strassler, Gustav Pfister | 1985-10-01 |