Number | Name | Date | Kind |
---|---|---|---|
2683730 | Seeger et al. | Jul 1954 | |
4259526 | Dunlap et al. | Mar 1981 |
Number | Date | Country |
---|---|---|
3225135 | Jan 1984 | DEX |
1181763 | Feb 1970 | GBX |
1378423 | Dec 1974 | GBX |
Entry |
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Chemical Abstracts, vol. 86, No. 4, Jan. 24, 1977, Abstract No. 17282s. |