Keduan Xu

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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