Number | Date | Country | Kind |
---|---|---|---|
2-4915 | Jan 1990 | JPX | |
2-53333 | Mar 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2951841 | Wilson | Sep 1960 | |
3268522 | Schenck | Aug 1966 | |
3725398 | Webster et al. | Apr 1973 | |
4902604 | Yamaguchi et al. | Feb 1990 |
Number | Date | Country |
---|---|---|
61-294429 | Dec 1986 | JPX |
1131890 | Dec 1984 | SUX |
Entry |
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Stetsenko et al III, Chemical Abstracts, vol. 71, #22892k (1969). |