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

Douglas G. Webster

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AC Induction motor braking system

Electricity: motive power systems – Induction motor systems – Braking
Patent

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Motor speed control system

Electricity: motive power systems – Braking – Automatic and/or with time-delay means
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Speedometer and odometer apparatus

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

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Profile ID: LFUS-PAI-P-756915

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