4. Telephonic communications
  5. Audio message storage, retrieval, or synthesis
  6. Dynamic audio signal recording or reproduction

Vertizon Corporation

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Alphanumeric keyboard with telephone dialing capability

Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...
Reexamination Certificate

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Automatic screening apparatus and method for use with telephone

Telephonic communications – Audio message storage – retrieval – or synthesis – Dynamic audio signal recording or reproduction
Patent

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