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

Paul F. DePond

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Call waiting-caller identification notification device

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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Multisensing circuitry for class signals and stutter dial tone i

Telephonic communications – Audio message storage – retrieval – or synthesis
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Multisensing circuitry for class signals and stutter dial...

Telephonic communications – Supervisory or control line signaling – Signal reception at substation
Reexamination Certificate

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Profile ID: LFUS-PAI-P-443850

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