4. Telephonic communications
  5. Diagnostic testing, malfunction indication, or electrical...

Jie Dong Wang

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Cascade low-pass filter to improve xDSL band attenuation for...

Telephonic communications – Substation or terminal circuitry – Conversion of signal form
Reexamination Certificate

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Circuits and methods for testing POTS service

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

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Pots splitter with line impedance matching

Telephonic communications – Substation or terminal circuitry
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2615631

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