4. Radiant energy
  5. Photocells; circuits and apparatus
  6. Photocell controlled circuit

Ephraim Greenfield

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Apparatus for measuring the energy of rapidly pulsing radiation

Optics: measuring and testing – Photometers – Photoelectric
Patent

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Device and method for measurement of incident power and energy

Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate

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Power meter with background subtraction

Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent

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Profile ID: LFUS-PAI-P-1100580

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