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

Jeffrey G. Herman

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Contoured transparent cover for a photoelectric switch

Equipment for production – distribution – or transformation of ene – Distribution – modification or control – Switch or casing therefor
Patent

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Photoelectric switch for use with a machine control circuit

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

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Switch apparatus including a pair of beam-type switches

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

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Switch apparatus requiring the hand of the operator to...

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

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Profile ID: LFUS-PAI-P-1731393

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