Number | Date | Country | Kind |
---|---|---|---|
3043230 | Nov 1980 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
1888827 | Klarmann et al. | Nov 1932 | |
3274260 | Levy et al. | Sep 1966 | |
3689570 | Gradeff et al. | Sep 1972 | |
3927118 | Ozretich | Dec 1975 |
Number | Date | Country |
---|---|---|
2255279 | Jul 1975 | FRX |
2006211A | May 1979 | GBX |
Entry |
---|
Condensed Chemical Dictionary, (8th Ed.) (1981) 180. |