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No. Title Application No. Inventor Filling Date
3 10-2010-0071210 J. W. Choi et al. 2010-07-23
2 10-2010-0071210 J. W. Choi et al. 2010-07-23
1 10-2008-0048253 C. H. Choi et al. 2008-05-23