4. Multiplex communications
  5. Wide area network
  6. Packet switching

Mark M. Rochkind

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Call connection technique

Multiplex communications – Wide area network – Packet switching
Patent

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Method for providing call waiting service

Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...
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Simultaneous voice and data communications

Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...
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Profile ID: LFUS-PAI-P-494662

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