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Qualifying a telephone line for digital transmission service

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

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Qualifying telephone line for digital transmission service

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

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Qualifying telephone line for digital transmission service

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

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Qualifying telephone lines for data transmission

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

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Qualifying telephone lines for data transmission

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0
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