Number | Date | Country | Kind |
---|---|---|---|
3059/75 | Mar 1975 | CH |
Number | Name | Date | Kind |
---|---|---|---|
3635959 | di Giovanoel et al. | Jan 1972 | |
3732213 | Balzer et al. | May 1973 | |
3891632 | Fleck et al. | Jun 1975 | |
3926969 | Fleck et al. | Dec 1975 |
Number | Date | Country |
---|---|---|
2,025,792 | Dec 1970 | DT |
2,262,340 | Jun 1973 | DT |
Entry |
---|
Neuner et al., Chemical Abstracts, 75 (1971), #152985m. |