Number | Date | Country | Kind |
---|---|---|---|
89 16122 | Dec 1989 | FRX | |
90 05669 | May 1990 | FRX |
Number | Date | Country |
---|---|---|
40573 | Nov 1981 | EPX |
0208510 | Jan 1987 | EPX |
0308885 | Mar 1989 | EPX |
0348523 | Jan 1990 | EPX |
0356234 | Feb 1990 | EPX |
3705934 | Sep 1988 | DEX |
2340092 | Sep 1977 | FRX |
8905812 | Jun 1989 | WOX |
Entry |
---|
Chemical Abstracts 67 100049z 100051u (1967). |