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

Allen Frohardt

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Gloss gauge

Optics: measuring and testing – Of light reflection – By comparison
Patent

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Means of enhancing the sensitivity of a gloss sensor

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

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Profile ID: LFUS-PAI-P-1441125

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