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4412217 | Willard et al. | Oct 1983 | |
4677657 | Nagata et al. | Jun 1987 | |
4868560 | Oliwa et al. | Sep 1989 | |
5058150 | Kang | Oct 1991 | |
5153579 | Fisch et al. | Oct 1992 | |
5307059 | Connary et al. | Apr 1994 | |
5459458 | Richardson et al. | Oct 1995 | |
5583921 | Hidaka | Dec 1996 | |
5654942 | Akahane | Aug 1997 |
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