4. Radiant energy
  5. Photocells; circuits and apparatus
  6. Photocell controls its own optical systems

James D. McKay

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Constant color temperature and intensity illumination source

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

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Mechanical aperture for controlling illumination level

Television – Special applications – Film – disc or card scanning
Patent

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Variable brightness light generators

Photocopying – Projection printing and copying cameras – Illumination systems or details
Patent

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Profile ID: LFUS-PAI-P-1030771

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