Kelvin Shih

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Audio amplifier

Electrical audio signal processing systems and devices – With amplifier
Patent

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Audio transducer

Electrical audio signal processing systems and devices – Voice controlled
Patent

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Electrical timing control switch

Electrical transmission or interconnection systems – Switching systems – Switch actuation
Patent

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LED junction temperature tester

Thermal measuring and testing – Temperature measurement – By electrical or magnetic heat sensor
Reexamination Certificate

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Light emitting diode with thermally conductive structure

Illumination – Light source and modifier – With ventilating – cooling or heat insulating means
Reexamination Certificate

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Profile ID: LFUS-PAI-P-32608

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