Number | Date | Country | Kind |
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8-279939 | Sep 1996 | JPX |
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4855209 | Martin et al. | Aug 1989 | |
4933252 | Nishikawa et al. | Jun 1990 | |
5529876 | Sasaki et al. | Jun 1996 | |
5712074 | Sato et al. | Jan 1998 |
Entry |
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Derwent Patent Abstract for JP-A-63-163469. |
Derwent Patent Abstract for JP-A-3-189657. |
Derwent Patent Abstract for JP-A-6-130713. |