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

Timothy N. Comerford

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Auxiliary baseband telephone interface for an answering machine

Telephonic communications – Audio message storage – retrieval – or synthesis
Patent

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Hazardous voltage protector for telephone line

Electricity: electrical systems and devices – Safety and protection of systems and devices – Ground fault protection
Patent

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Multiplexed data channel controlled telephone system

Telephonic communications – Multi-line or key substation system with selective switching... – With intercom system
Patent

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Telephone line-powered power supply for ancillary equipment...

Telephonic communications – Subscriber line or transmission line interface – Power supply
Reexamination Certificate

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Profile ID: LFUS-PAI-P-427706

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