Number | Date | Country | Kind |
---|---|---|---|
52-42321 | Apr 1977 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3060020 | Greig | Oct 1962 | |
3565654 | Story | Feb 1971 |
Entry |
---|
Chemical Abstracts, vol. 69, col. 11962r, vol. 72, col. 113535h-applied, of interest: vol. 53/1690g, 55/P6841g, 59/P2580b/P7287g/P11163f. |