4. Electricity: measuring and testing
  5. Fault detecting in electric circuits and of electric components
  6. For fault location

Chunming Han

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Efficient echo cancellation techniques

Telephonic communications – Echo cancellation or suppression – Using digital signal processing
Reexamination Certificate

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Reflectometer with echo canceller

Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Reexamination Certificate

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Techniques to test signal propagation media

Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – For fault location
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2912599

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