Number | Date | Country | Kind |
---|---|---|---|
17172/73 | Dec 1973 | CH |
Number | Name | Date | Kind |
---|---|---|---|
2197462 | Bent | Apr 1940 | |
2819298 | Isler et al. | Jan 1958 | |
2917539 | Isler et al. | Dec 1959 | |
3070629 | Ohloff et al. | Dec 1962 | |
3385902 | Bright et al. | May 1968 | |
3404185 | Thomas et al. | Oct 1968 |
Number | Date | Country |
---|---|---|
1,066,709 | Apr 1967 | UK |
Entry |
---|
Hawkins, "J. Chem. Soc.," 1955, pp. 2388-2390, (1955). |