Number | Name | Date | Kind |
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4168305 | Maurer et al. | Sep 1979 | |
4662930 | Gray et al. | May 1987 | |
4683224 | Fahmy | Jul 1987 |
Number | Date | Country |
---|---|---|
164308 | Apr 1985 | EPX |
93792 | Apr 1988 | JPX |
Entry |
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Derkash et al., "Chem. Abst.", vol. 68, (1968), 59664b. |
Kondratyuk et al., "Chem. Abst.", vol. 73, (1973) 12762v. |