4. Telephonic communications
  5. Echo cancellation or suppression

Mark Raifel

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Circuit method and system for transmitting information

Telephonic communications – Echo cancellation or suppression
Reexamination Certificate

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Circuit method and system for transmitting information

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of hybrid or echo suppressor or canceller
Reexamination Certificate

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Method and apparatus for using a waveform segment in place...

Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2206858

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