4. Radiant energy
  5. Invisible radiant energy responsive electric signalling
  6. Infrared responsive

Roger A. Wendt

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Calibrated color scanner

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

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Calibrated color scanner with reference level adjustment

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

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Fire detection system with IR and UV ratio detector

Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent

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Intrusion detection system

Communications: electrical – Condition responsive indicating system – With particular system function
Patent

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Profile ID: LFUS-PAI-P-640939

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