Number | Date | Country | Kind |
---|---|---|---|
75 23500 | Jul 1975 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
2794048 | Richter et al. | May 1957 | |
3201470 | Huebner | Aug 1965 | |
3458577 | Galantay | Jul 1969 | |
3922305 | Engelhardt | Nov 1975 |
Entry |
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Levshine et al., "Chemical Abstracts", vol. 55, p. 21066d (1961). |
Carlsson et al., "Chemical Abstracts", vol. 63, p. 2276 (1965). |