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Adjustable earphone
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Patent number 8,320,602
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Issue date Nov 27, 2012
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Silitek Electronic (Guangzhou) Co., Ltd.
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Chun-Hsin Liu
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Personal audio listening device
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Patent number 7,778,410
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Issue date Aug 17, 2010
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Lite-On Technology Corp.
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Chun-Hsin Liu
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Safety socket
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Patent number 5,928,019
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Issue date Jul 27, 1999
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Chih-Ching Chen
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H01 - BASIC ELECTRIC ELEMENTS
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Safety socket
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Patent number 5,865,635
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Issue date Feb 2, 1999
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Yu-Lung Hsiang
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H01 - BASIC ELECTRIC ELEMENTS