4. Telephonic communications
  5. Substation or terminal circuitry
  6. For loudspeaking terminal

Paul Provencal

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Telephony and data network services at a telephone

Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate

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Telephony and data network services at a telephone

Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate

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Voice-switching device and method for multiple receivers

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2617939

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