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

Thomas Iffland

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Method for automatic focusing an imaging optical system on...

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

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Method for wavelength calibration of an optical measurement...

Optics: measuring and testing – Plural test
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2952335

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