Jui-Jen YUAN

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Taichung, TW

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Patents Grantslast 30 patents

Information Patent Grant
Bell assembly having actuatable clapper
- Patent number 6,739,282
- Issue date May 25, 2004
- Jui Jen Yuan
- G10 - MUSICAL INSTRUMENTS ACOUSTICS

Patents Applicationslast 30 patents

Information Patent Application
Bell having one-way clapper
- Publication number 20090235858
- Publication date Sep 24, 2009
- Jui-Jen YUAN
- G10 - MUSICAL INSTRUMENTS ACOUSTICS