Number | Date | Country | Kind |
---|---|---|---|
8472-75 | Dec 1975 | CSX |
Number | Name | Date | Kind |
---|---|---|---|
3732231 | Semonsky et al. | May 1973 | |
3880856 | Bach et al. | Apr 1975 | |
3920664 | Clemens et al. | Nov 1975 | |
3959288 | Bach et al. | May 1976 | |
3992385 | Bach et al. | Nov 1976 | |
4005090 | Semonsky et al. | Jan 1977 |
Number | Date | Country |
---|---|---|
1199233 | Jul 1970 | GBX |
Entry |
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Krepelka et al., Collection of Czechoslovak Chemical Communications, vol. 42, (1977), pp. 2953-2956. |