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

Roy Robertson

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Hybrid switch with solid-state condition

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

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Ultrasonic probe device with rapid attachment and detachment...

Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Reexamination Certificate

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Profile ID: LFUS-PAI-P-772372

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