Number | Date | Country | Kind |
---|---|---|---|
3611425 | Apr 1986 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2691021 | Kaiser et al. | Oct 1954 | |
3591693 | Cantrall et al. | Jul 1971 | |
3706741 | Papaioannou | Dec 1972 | |
4269832 | Tomcufcik et al. | May 1981 |
Entry |
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Kadota et al., Chemical Abstracts, vol. 88 (13): 89718c, Mar. 27, 1978, p. 527. |