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Xixiang Zhang
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Kowloon, CN
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last 30 patents
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Patent Grant
Sound attenuating structures
Patent number
7,395,898
Issue date
Jul 8, 2008
RSM Technologies Limited
Zhi Yu Yang
G10 - MUSICAL INSTRUMENTS ACOUSTICS
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last 30 patents
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Patent Application
Sound attenuating structures
Publication number
20050194209
Publication date
Sep 8, 2005
RSM TECHNOLOGIES LIMITED
Zhi Yu Yang
G10 - MUSICAL INSTRUMENTS ACOUSTICS