4. Electricity: measuring and testing
  5. Electrical speed measuring
  6. Including speed-related frequency generator

James B. Van Voorhis

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Multiple sensor ultrasonic monitoring device

Measuring and testing – Vibration – By mechanical waves
Reexamination Certificate

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Visible light laser tachometer for sensing rotational speed of a

Electricity: measuring and testing – Electrical speed measuring – Including speed-related frequency generator
Patent

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Profile ID: LFUS-PAI-P-232775

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