Jung-O Koo

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Incheon-city, KR

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Patents Grantslast 30 patents

Information Patent Grant
Keyboard and method for manufacturing the same
- Patent number 7,034,219
- Issue date Apr 25, 2006
- Jung-O Koo
- G10 - MUSICAL INSTRUMENTS ACOUSTICS

Patents Applicationslast 30 patents

Information Patent Application
Keyboard and method for manufacturing the same
- Publication number 20060185498
- Publication date Aug 24, 2006
- Jung-O Koo
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Keyboard and method for manufacturing the same
- Publication number 20040159226
- Publication date Aug 19, 2004
- Jung-O Koo
- G10 - MUSICAL INSTRUMENTS ACOUSTICS