4. Telephonic communications
  5. Diagnostic testing, malfunction indication, or electrical...
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Processes and systems for managing testing of communications...

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal
Reexamination Certificate

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Programmable automatic call-thru set

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – With blocking of normal usage
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Programmable source for supplying controllably variable AC/DC vo

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal
Patent

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Protection and recovery of telephone line interface circuits

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Including fault responsive disconnection of tested component
Patent

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Protective circuit for the overvoltage protection of a subscribe

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal
Patent

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Protective circuit for the overvoltage protection of a subscribe

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal
Patent

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PSTN call simulator and method of operation for testing...

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of centralized switching system
Reexamination Certificate

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PSTN VOIP reconciliation

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of trunk or long line
Reexamination Certificate

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Public modular-telephone management system

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of trunk or long line
Patent

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Public telephone set

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Monitoring
Patent

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Public telephone set

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal
Patent

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