4. Radiant energy
  5. Photocells; circuits and apparatus
  6. Optical or pre-photocell system

Donald W. Sting

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Aperture image beam splitter

Patent

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Arch conduit

Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway
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Arched conduit with improved corrugations

Pipes and tubular conduits – Flexible – With means for facilitating collapse
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ATR objective and method for sample analyzation using an ATR cry

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

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Blocker device for eliminating specular reflectance from a diffu

Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
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Profile ID: LFUS-PAI-P-90691

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