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

Duncan B. Campbell

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Agricultural article inspection apparatus and method...

Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Condition responsive means controls separating means
Reexamination Certificate

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Apparatus and method for detecting and sorting plastic articles

Optics: measuring and testing – By polarized light examination – With polariscopes
Patent

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Electro-mechanical control means for space communication receive

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent

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Methods of separating selected items from a mixture including ra

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

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Peach pit detection apparatus and method

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

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Profile ID: LFUS-PAI-P-365492

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