4. Telephonic communications
  5. Supervisory or control line signaling
  6. Substation originated

Chern-Jsair Chang

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Monitor-controlling device

Telephonic communications – Supervisory or control line signaling – Substation originated
Patent

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Multi-function telephone dialer display

Telephonic communications – Reception of calling information at substation in wireline... – Blocking caller id transmission
Patent

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Profile ID: LFUS-PAI-P-1370657

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