Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4612534 | Method of transmitting measuring values in a monitoring system | Richard J. Buehler, Andreas Scheidweiler, Eugen Schibli | 1986-09-16 |
| 4582996 | Electrode insulating member for ionization fire alarm | Andreas Scheidweiler, Bernhard Durrer | 1986-04-15 |
| 4568919 | Monitoring system including a number of measuring stations series connected to a signal line | Peter Mueller, Hansjurg Waelti, Eugen Schibli, Max Grimm | 1986-02-04 |
| 4568924 | Method of and apparatus for signalling an alarm | Alfred Wuthrich, Andreas Scheidweiler | 1986-02-04 |
| 4559453 | Smoke detector with a radiation source operated in a pulse-like or intermittent mode | Martin Labhart | 1985-12-17 |
| 4555634 | Optical smoke detector with contamination detection circuitry | Heinz Guttinger, Zoltan Horvath | 1985-11-26 |
| 4547675 | Smoke detector operating according to the radiation extinction principle | Martin Labhart | 1985-10-15 |
| 4524281 | Optical smoke detector with sensitivity adjustment | Peter Gruber | 1985-06-18 |
| 4506161 | Smoke detector with a radiation source operated in a pulse-like or intermittent mode | Heinz Guttinger | 1985-03-19 |
| 4404548 | Method for transmitting measuring values in a fire alarm system and apparatus for the performance of the aforesaid method | Peter Mueller, Eugen Schibli, Andreas Scheidweiler | 1983-09-13 |
| 4379290 | Alarm device with a condition sensor element | Gustav Pfister | 1983-04-05 |
| 4356478 | Employing a shape memory alloy in a fire alarm temperature sensitive element | Peter Muller | 1982-10-26 |
| 4269510 | Smoke detector | Zoltan Horvath, Hans-Dieter Ackermann, Erwin Tresch | 1981-05-26 |
| 4249168 | Flame detector | — | 1981-02-03 |
| 4241282 | Smoke detector with bimetallic element for temperature compensation | Erwin Tresch | 1980-12-23 |