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5859459 | Ikeda | Jan 1999 | A |
5889304 | Watanabe et al. | Mar 1999 | A |
5946230 | Shimizu et al. | Aug 1999 | A |
6130129 | Chen | Oct 2000 | A |
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6159801 | Hsieh et al. | Dec 2000 | A |
6222225 | Nakamura et al. | Apr 2001 | B1 |
Entry |
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