4. Communications: electrical
  5. Condition responsive indicating system
  6. Specific condition

Andreas Siemens

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Detector for scattered light

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
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Method and device for identifying and localizing a fire

Communications: electrical – Condition responsive indicating system – Specific condition
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Method for evaluation of a scattered light signal and...

Optics: measuring and testing – By particle light scattering – With photocell detection
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Profile ID: LFUS-PAI-P-2421844

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