4. Telephonic communications
  5. Special services
  6. Conferencing

James Stewart Barber

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Intelligent phone cord apparatus

Telephonic communications – Supervisory or control line signaling – Substation originated
Reexamination Certificate

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Interactive telephone networking service

Telephonic communications – Special services – Conferencing
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Telecommunication system, method and subscriber unit for use...

Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate

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Profile ID: LFUS-PAI-P-779987

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