Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8437002 | Imaging optical inspection device with a pinhole camera | György Juhász, Miklós Fried, Csaba Ferenc Major, Péter Petrik | 2013-05-07 |
| 4555634 | Optical smoke detector with contamination detection circuitry | Jurg Muggli, Heinz Guttinger | 1985-11-26 |
| 4269510 | Smoke detector | Jurg Muggli, Hans-Dieter Ackermann, Erwin Tresch | 1981-05-26 |
| 4181439 | Smoke detector with a conical ring-shaped radiation region | Erwin Tresch | 1980-01-01 |