Number | Name | Date | Kind |
---|---|---|---|
4113939 | Fischer et al. | Sep 1978 | |
4189572 | Pews | Feb 1980 | |
5130313 | Comte et al. | Jul 1992 | |
5670511 | Marz et al. | Sep 1997 |
Number | Date | Country |
---|---|---|
0 854 146 A1 | Jul 1998 | EPX |
Entry |
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Knollmuller, M., Monatshefte Fur Chemie, 102 (5): 1583-92 (1971). |