Number | Date | Country | Kind |
---|---|---|---|
62-184968 | Jul 1987 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3455906 | Marshall et al. | Jul 1969 | |
3579499 | Clarkson | May 1971 | |
4519946 | Teutsch et al. | May 1985 |
Number | Date | Country |
---|---|---|
0228700 | Dec 1986 | EPX |
Entry |
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Chemical Abstracts, vol. 108, No. 11, Mar. 14, 1988, pp. 369-370. |