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

François Grasdepot

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Method for measuring spectral absorption in a body and...

Optics: measuring and testing – For light transmission or absorption
Reexamination Certificate

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Method for wavelength calibration of an electromagnetic...

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

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Profile ID: LFUS-PAI-P-2498880

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