4. Telephonic communications
  5. Diagnostic testing, malfunction indication, or electrical...
  6. Testing of subscriber loop or terminal

Philip B. Vail

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Alarm and test system for a digital added main line

Telephonic communications – Terminal accessory or auxiliary equipment – With circuit connection to terminal
Patent

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Alarm and test system for a digital added main line

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

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Alarm and test system for a digital added main line

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

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Gel filled RJ11 connector

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

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Maintenance test unit

Equipment for production – distribution – or transformation of ene – Distribution – modification or control – Switch or casing therefor
Patent

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Profile ID: LFUS-PAI-P-573381

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