Number | Name | Date | Kind |
---|---|---|---|
3082154 | Allan | Mar 1963 | |
3574833 | Arnold et al. | Apr 1971 | |
3663693 | Slighter et al. | May 1972 | |
4284627 | Raether et al. | Aug 1981 |
Number | Date | Country |
---|---|---|
2177913A | Feb 1987 | GBX |
Entry |
---|
Chemical Abstracts, 77:168620r (1972). |