Number | Name | Date | Kind |
---|---|---|---|
2309691 | Brannon | Feb 1943 | |
2395336 | MacMullen et al. | Feb 1946 | |
2832795 | Hempel et al. | Apr 1958 | |
3234230 | Lloyd et al. | Feb 1966 | |
3409660 | Lloyd et al. | Nov 1968 |
Number | Date | Country |
---|---|---|
890,943 | Jan 1972 | CA |
Entry |
---|
Schwenker et al., Chem. Ber. vol. 101, pp. 2375-2380 (1968). |