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5578076 | Krueger et al. | Nov 1996 | |
5693090 | Unsworth et al. | Dec 1997 | |
5716370 | Williamson, IV et al. | Feb 1998 | |
5735894 | Krueger et al. | Apr 1998 | |
5800531 | Cosgrove et al. | Sep 1998 | |
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Entry |
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