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Guangzhou, CN
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last 30 patents
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Patent Grant
Loudspeaker assembly
Patent number
10,469,943
Issue date
Nov 5, 2019
GUOGUANG ELECTRIC CORP. LTD
Shouhua Xie
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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last 30 patents
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Patent Application
LOUDSPEAKER ASSEMBLY
Publication number
20190090049
Publication date
Mar 21, 2019
Shouhua Xie
H04 - ELECTRIC COMMUNICATION TECHNIQUE