Number | Date | Country | Kind |
---|---|---|---|
3110960 | Mar 1981 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
1715430 | Schmidt et al. | Jun 1929 | |
3904407 | Regensburger et al. | Sep 1975 | |
4156757 | Graser et al. | May 1979 |
Number | Date | Country |
---|---|---|
2237539 | Jul 1972 | DEX |
2139690 | Feb 1973 | DEX |
2314051 | Mar 1973 | DEX |
2929518 | Jan 1980 | DEX |
3001936 | Jul 1980 | DEX |
373844 | Jan 1964 | CHX |
Entry |
---|
Chemical Abstracts, vol. 83, No. 12, (1975), 106201v. |