4. Telephonic communications
  5. Audio message storage, retrieval, or synthesis
  6. Multimedia system

Wilfred E. Lehder

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Alphanumeric messaging system

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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Communication device having capability to convert between...

Telephonic communications – Audio message storage – retrieval – or synthesis – Multimedia system
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2469431

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