Number | Date | Country | Kind |
---|---|---|---|
3444893 | Dec 1984 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
RE22751 | Trent | Apr 1946 | |
2360844 | Bradshaw et al. | Nov 1941 | |
2383599 | Glossor | Aug 1945 | |
2383601 | Keim | Aug 1945 | |
2486444 | Smith | Nov 1949 | |
4164506 | Kawahara et al. | Aug 1979 |
Entry |
---|
Ullmanns Encyklopaedie der technischen Chemie, 4th Edition, vol. 11, (1976), (p. 432). |