4. Radiant energy
  5. Invisible radiant energy responsive electric signalling
  6. Including a radiant energy responsive gas discharge device

Hiroshi Sawa

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Detector coupling mechanism

Radiant energy – Invisible radiant energy responsive electric signalling – Including a radiant energy responsive gas discharge device
Patent

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Photoelectric smoke detector with expanded visual field

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent

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Photoelectric smoke detector with permanently fixed insect net

Communications: electrical – Condition responsive indicating system – Specific condition
Patent

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Scattered-light smoke detector with a shielding structure of det

Communications: electrical – Condition responsive indicating system – Specific condition
Patent

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Temperature detecting device

Measuring and testing – Gas analysis – Moisture content or vapor pressure
Patent

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Profile ID: LFUS-PAI-P-1278772

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