Huang; Fred
Patent Applications and Registrations
Patent applications and USPTO patent grants for Huang; Fred.The latest application filed is for "dual-frequency coaxial earphones with shared magnet".
- Huang; Fred - Taoyuan TW
- HUANG; Fred - Taoyuan City TW
| Patent | Date |
|---|---|
| Dual-frequency coaxial earphones with shared magnet Grant 8,189,847 - Huang May 29, 2 | 2012-05-29 |
| Dual-frequency coaxial earphones Grant 8,077,898 - Huang December 13, 2 | 2011-12-13 |
| Dual-frequency coaxial earphones with shared magnet App 20100046783 - HUANG; Fred | 2010-02-25 |
| Dual-frequency coaxial earphones App 20090279729 - Huang; Fred | 2009-11-12 |
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