Number | Date | Country | Kind |
---|---|---|---|
3-38574 | Mar 1991 | JPX | |
3-43849 | Mar 1991 | JPX | |
4-32014 | Feb 1992 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4101462 | Cuscurida et al. | Jul 1978 |
Number | Date | Country |
---|---|---|
668477 | Dec 1965 | BEX |
0376602 | Jul 1990 | EPX |
63-265909 | Feb 1988 | JPX |
Entry |
---|
Hawley's Condensed Chemical Dictionary; Sax et al., p. 927. |