4. Telephonic communications
  5. Subscriber line or transmission line interface
  6. Network interface device

David J. Pope

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Adaptive equalizers

Pulse or digital communications – Repeaters – Testing
Patent

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Echo cancelling system

Telephonic communications – Subscriber line or transmission line interface – Network interface device
Patent

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QAM encoding

Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
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Profile ID: LFUS-PAI-P-1724698

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