Number | Date | Country | Kind |
---|---|---|---|
2925944 | Jun 1979 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3963679 | Ullrich et al. | Jun 1976 | |
4049632 | Magnusson et al. | Sep 1977 | |
4051212 | Grigat et al. | Sep 1977 | |
4055549 | Roberts | Oct 1977 |
Number | Date | Country |
---|---|---|
2302564 | Jul 1974 | DEX |
2423764 | Nov 1975 | DEX |
Entry |
---|
Condensed Chemical Dictionary, 9th Edition, Van Nostrand, N-4, (1977) p. 924. |