Altdorf
Switzerland
2
2019-06-27
The entities that hold a legal rights for patent applications filed by inventor Walker Stefan:
Stefan Walker from Altdorf, CH has applied for patents for these inventions. The list has both pending applications and granted patents:
Fire detection using the scattered light principle with a staggered activation of a further LED unit for radiating in further light pulses with different wavelengths and scattered light angles
#2 | 2016-06-02Scattered-light smoke detector with a two-color light-emitting diode
1548250 ⎘