Number | Date | Country | Kind |
---|---|---|---|
3639158 | Nov 1986 | DEX |
Number | Date | Country |
---|---|---|
0062368 | Oct 1982 | EPX |
1130265 | Jun 1986 | JPX |
Entry |
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Research Disclosure 22501 (Jan. 1983). |
Chemical Abstract, vol. 80 (1974), 108,143q. |
Chemical Abstract, vol. 78 (1973), 84,009f. |