4. Demodulators
  5. Amplitude modulation demodulator
  6. Having specific distortion, noise or other interference...

Sheldon Howard

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Personal security system

Communications: electrical – Continuously variable indicating – With meter reading
Patent

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System for accessing telephonic communications and for conductin

Telephonic communications – With usage measurement – Call charge metering or monitoring
Patent

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Time code telephone security access system

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

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Profile ID: LFUS-PAI-P-932631

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