4. Telephonic communications
  5. Including aid for handicapped user

Darrell L. Jennings

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Communication system supporting simultaneous voice and...

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

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Telephone system integrated text based communication apparatus a

Telephonic communications – Including aid for handicapped user
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Telephone system integrated text based communication...

Telephonic communications – Including aid for handicapped user
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1061862

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