Number | Date | Country | Kind |
---|---|---|---|
3047730 | Dec 1980 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
4089867 | Duranleau et al. | May 1978 |
Entry |
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Schoenafinger et al., Chemical Abstracts, vol. 96, (1981), No. 40909s. |
Grundman et al., Chemical Abstracts, vol. 88, (1975), No. 50732c. |