4. Electricity: measuring and testing
  5. Measuring, testing, or sensing electricity, per se
  6. Frequency of cyclic current or voltage

Harry D. Shearer

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Digital frequency deviation meter

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent

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Position fixing system utilizing plural commercial broadcast tra

Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent

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Solid state digital running time indicator

Registers – Platform operated – Platform actuated traffic counters
Patent

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Wideband digital frequency discriminator and phase and frequency

Demodulators – Amplitude modulation demodulator – Having specific distortion – noise or other interference...
Patent

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Profile ID: LFUS-PAI-P-1258958

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