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

Darren D. Cofer

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Method and apparatus for detecting objects

Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
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Method and apparatus for detecting objects using structured...

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

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Profile ID: LFUS-PAI-P-2818976

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