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

Robert E. Knowlden

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Measurements using balanced illumination optical microscopy

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

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Method and apparatus for correcting shifts between a reference f

Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent

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Pulsed source scanning interferometer

Optics: measuring and testing – By light interference – For dimensional measurement
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1268344

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