Number | Name | Date | Kind |
---|---|---|---|
1200848 | Kardos et al. | Sep 1916 | |
1913052 | Jaeger et al. | Jun 1933 | |
3446810 | Dien et al. | May 1969 | |
3615800 | Spietschka et al. | Oct 1971 | |
4588814 | Spietschka et al. | May 1986 |
Number | Date | Country |
---|---|---|
54806 | Jun 1982 | EPX |
Entry |
---|
Chemical Abstracts vol. 42:5892i (1948). |