Number | Date | Country | Kind |
---|---|---|---|
79 13207 | May 1979 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
3039916 | Neracher et al. | Jun 1962 | |
3544597 | Killam | Dec 1970 | |
4233229 | Chakrabarti | Nov 1980 |
Number | Date | Country |
---|---|---|
2321285 | Mar 1977 | FRX |
2384751 | Oct 1978 | FRX |
Entry |
---|
Chemical Abstracts 65 20373e (1966), 67 11213f (1967), 75 37386e (1971), 89 39924s (1978). |