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Patent applications and USPTO patent grants for Yoo; Ok-Jung.The latest application filed is for "dynamic micro speaker with dual suspension".
Patent | Date |
---|---|
Dynamic micro speaker with dual suspension Grant 7,505,603 - Yoo March 17, 2 | 2009-03-17 |
Dynamic micro speaker with dual suspension App 20060098838 - Yoo; Ok-Jung | 2006-05-11 |
Electric-acoustic transducer having moving magnet and transducing method thereof Grant 6,389,148 - Yoo , et al. May 14, 2 | 2002-05-14 |
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