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Remote monitoring apparatus

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

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Remote telephony testing device

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

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Remote test call unit and service

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

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Remote test telephone line access system

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

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Remote testing of a communications line

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Using portable test set
Reexamination Certificate

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Remote testing of a trunk leading to an automatic call distribut

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

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Remote testing of metallic loops with a trans hybrid signal

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

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Remote testing system for electrical circuits

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

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Remote unit monitoring system

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

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Remotely actuated splittler bypass system and method

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

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Remotely actuated switch and protection circuit

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

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Remotely addressable maintenance unit

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

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Remotely connectable maintenance termination unit

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

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Remotely controlled apparatus for conditioning telephone line ex

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

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Remotely controlled communication line diagnostic apparatus and

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

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Remotely controlled multiple pair telephone pedestal/building te

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

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Remotely operable telecommunications conductor test circuit...

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

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Removable telephone line protection module for an electronic dev

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of data transmission
Patent

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Repeater apparatus having isolation circuit

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of repeater
Patent

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Repetitive call control method, switch using the method, and...

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

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