4. Electrical audio signal processing systems and devices
  5. Monitoring/measuring of audio devices

Zhen-Shan Cui

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Sound channel detection circuit

Electrical audio signal processing systems and devices – Monitoring/measuring of audio devices
Reexamination Certificate

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Testing apparatus for hard disk drive

Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Instruments and devices for fault testing
Reexamination Certificate

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USB component tester

Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate

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Profile ID: LFUS-PAI-P-3343077

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