4. Recording, communication, or information retrieval equipment
  5. Video or audio transmission, recording or playback equipment
  6. Radio transceiver

Joel Q. Adams

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Apparatus and method for providing a telephone user with control

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection
Patent

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Option bus

Telephonic communications – Substation or terminal circuitry – Conversion of signal form
Patent

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Telephone

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

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Telephone

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

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Profile ID: LFUS-PAI-P-524697

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