Number | Date | Country | Kind |
---|---|---|---|
63-157720 | Jun 1988 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4288517 | Arimatsu et al. | Sep 1981 | |
4640882 | Mitsuhashi et al. | Feb 1987 | |
4680245 | Suematsu et al. | Jul 1987 | |
4734350 | Lin et al. | Mar 1988 | |
4902598 | Winnik et al. | Feb 1990 |
Entry |
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Derwent Abstract 80-29808C JPA-55-17944. |
Derwent Abstract 89-111597 JO-1059238. |