Number | Date | Country | Kind |
---|---|---|---|
54-59631 | May 1979 | JPX | |
54-59632 | May 1979 | JPX | |
54-59634 | May 1979 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3639449 | Kunugi et al. | Feb 1972 | |
3655747 | Sennewald et al. | Apr 1972 | |
3772381 | Nakamura et al. | Nov 1973 |
Entry |
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Emel'yanov, B. V. et al., Chemical Abstracts, vol. 54, (1960), #7003b. |