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

Franz F. Ehrenhaft

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Additive color system with compensation of repeatability errors

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

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Additive color system with compensation of repeatability errors

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

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Additive lamphouse

Photocopying – Projection printing and copying cameras – Multicolor picture
Patent

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Profile ID: LFUS-PAI-P-31226

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