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

Wesley D. Helgeson

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High gain photoconductive semiconductor switch having...

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

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Light sources based on semiconductor current filaments

Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2019945

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