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

Hong Fu Jin Precision Industry (Shen Zhen) Co., Ltd.

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Apparatus for driving cold cathode fluorescent lamps

Electric lamp and discharge devices: systems – Current and/or voltage regulation
Reexamination Certificate

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Apparatus for testing bending strength

Measuring and testing – Testing by impact or shock – Accelerated or decelerated specimen
Reexamination Certificate

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Apparatus for testing bending strength

Measuring and testing – Testing by impact or shock – Accelerated or decelerated specimen
Reexamination Certificate

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Audio processing apparatus for automatic gain control

Data processing: generic control systems or specific application – Specific application – apparatus or process – Digital audio data processing system
Reexamination Certificate

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Battery cover assembly for portable electronic device

Chemistry: electrical current producing apparatus – product – and – Cell support for removable cell – Support or holder per se
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Profile ID: LFUS-PAI-P-2224125

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