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Tu-Cheng, TW
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last 30 patents
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Patent Grant
Sound box and portable electronic device using the same
Patent number
8,259,978
Issue date
Sep 4, 2012
Chi Mei Communication Systems, Inc.
Peng-Yu Chiu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
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Patent Application
SOUND BOX AND PORTABLE ELECTRONIC DEVICE USING THE SAME
Publication number
20090296970
Publication date
Dec 3, 2009
Chi Mei Communication Systems, Inc.
PENG-YU CHIU
H04 - ELECTRIC COMMUNICATION TECHNIQUE