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

Rolf Rieger

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Arrangement for determining the incidence angle of radiation...

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

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Arrangement for determining the position of a light source

Optics: measuring and testing – Lamp beam direction or pattern
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2035166

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