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

Marc Dufour

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Method and apparatus for active vision image enhancement with wa

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

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Method and apparatus for detecting the presence of flaws in a mo

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

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Method and apparatus for monitoring the surface profile of a mov

Optics: measuring and testing – By polarized light examination – With light attenuation
Patent

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Method and apparatus for three-dimensional compositional...

Optics: measuring and testing – By light interference – Using fiber or waveguide interferometer
Reexamination Certificate

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Profile ID: LFUS-PAI-P-682886

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