Number | Date | Country | Kind |
---|---|---|---|
47-45696 | May 1972 | JA |
Number | Name | Date | Kind |
---|---|---|---|
3468664 | Stewart | Sep 1969 | |
3615490 | Gaffin | Oct 1971 | |
3700458 | Lindholm | Oct 1972 | |
3756829 | Ohkubo et al. | Sep 1973 |
Number | Date | Country |
---|---|---|
1,255,183 | Jan 1971 | UK |
Entry |
---|
Chemical Abstracts, Vol. 66, 1967, page 8147. |