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Shenzhen, CN
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last 30 patents
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Patent Grant
Miniature speaker
Patent number
9,578,421
Issue date
Feb 21, 2017
AAC Technologies Pte. Ltd.
Song Pan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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last 30 patents
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Patent Application
Miniature Speaker
Publication number
20150341728
Publication date
Nov 26, 2015
AAC Technologies Pte. Ltd.
Song Pan
H04 - ELECTRIC COMMUNICATION TECHNIQUE