Number | Name | Date | Kind |
---|---|---|---|
3479248 | Nobile | Nov 1969 | |
4018620 | Pengue | Apr 1977 | |
4237226 | Grethlein | Dec 1980 | |
4304649 | Han et al. | Dec 1981 |
Number | Date | Country |
---|---|---|
44622 | Jan 1982 | EPX |
57-22695 | Feb 1982 | JPX |
Entry |
---|
Chem. Abstracts 98: 91246x; Chen and Gong; 1982. |