4. Telephonic communications
  5. Transmission line conditioning

Chan-En Li

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Call overflow system and method for overflowing telephone...

Telephonic communications – Centralized switching system – Call distribution to operator
Reexamination Certificate

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Method and apparatus for controlling line conditioner equalizer

Telephonic communications – Transmission line conditioning
Patent

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Profile ID: LFUS-PAI-P-1516085

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