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

Carl Olson

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Film inspection system

Optics: measuring and testing – Inspection of flaws or impurities – Having predetermined light transmission regions
Patent

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Film inspection system

Optics: measuring and testing – Inspection of flaws or impurities – Having predetermined light transmission regions
Patent

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Optical motion picture film inspection system

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

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Profile ID: LFUS-PAI-P-1250319

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