Number | Name | Date | Kind |
---|---|---|---|
4484008 | Cook, Jr. et al. | Nov 1984 | |
4657580 | Krass | Apr 1987 | |
4710582 | Phillips | Dec 1987 |
Number | Date | Country |
---|---|---|
63-162666 | Jul 1988 | JPX |
2049695 | Dec 1980 | GBX |
Entry |
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Go et al, Chemical Abstracts, vol. 108, No. 17778f (1988). |