TREA

Xiangyang Han

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  • Shenzhen, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Finger musical instrument
    • Patent number 7,674,969
    • Issue date Mar 9, 2010
    • Ringsun (Shenzhen) Industrial Limited
    • Keduan Xu
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS

Patents Applicationslast 30 patents

  • Information Patent Application

    Finger musical instrument
    • Publication number 20090126554
    • Publication date May 21, 2009
    • Keduan Xu
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS