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

C. Ray Ballard

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Data under voice communications system

Pulse or digital communications – Repeaters – Testing
Patent

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Simultaneous transmission of two information signals within a ba

Multiplex communications – Wide area network – Packet switching
Patent

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Telephone line interface circuit

Patent

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Profile ID: LFUS-PAI-P-683464

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