4. Telephonic communications
  5. Repeater
  6. With gain or attenuation control

Tollgrade Communications, Inc.

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Apparatus and method for detecting a bridged tap and/or an...

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

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Apparatus and method for measuring loop insertion loss...

Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate

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Automatic provisioning of a telephone line test system

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

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Coaxial testing and provisioning network interface device

Television – Special applications – Manufacturing
Patent

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Enhanced line powered amplifier

Telephonic communications – Repeater – With gain or attenuation control
Patent

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Profile ID: LFUS-PAI-P-499310

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