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

Helena S. Ho

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Apparatus and method for generating low level noise signals

Cryptography – Key management – Having particular key generator
Patent

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DS1 trunk packing and unpacking apparatus and method

Multiplex communications – Wide area network – Packet switching
Patent

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N:1 bit compression apparatus and method

Multiplex communications – Wide area network – Packet switching
Patent

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Rudimentary digital speech interpolation apparatus and method

Multiplex communications – Wide area network – Packet switching
Patent

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Voice enhancement system and method

Telephonic communications – Repeater – With gain or attenuation control
Patent

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Profile ID: LFUS-PAI-P-1175817

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