4. Telephonic communications
  5. Terminal
  6. Having loudspeaking conversation capability

Michael A. Morra

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Adaptive expander for telephones

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
Patent

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Adjunct answering machine

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent

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Alarm transmitter

Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent

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Answer detection method and apparatus for coin telephone sets

Telephonic communications – With check operated control – Fraud or interference prevention
Patent

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Anti-snag duplex connector

Optical waveguides – With disengagable mechanical connector – Structure surrounding optical fiber-to-fiber connection
Patent

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Profile ID: LFUS-PAI-P-175331

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