Number | Date | Country | Kind |
---|---|---|---|
4114221 | May 1991 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
4182828 | Reischi et al. | Jan 1980 |
Number | Date | Country |
---|---|---|
631961 | May 1963 | BEX |
0001603 | May 1979 | EPX |
0131859 | Jan 1985 | EPX |
890519 | Feb 1962 | GBX |
Entry |
---|
Chemical Abstracts, vol. 80, 1974, p. 394. |