Number | Name | Date | Kind |
---|---|---|---|
3545439 | Duncan | Dec 1970 | |
3699951 | Zaffaroni | Oct 1972 | |
3777015 | Zaffaroni | Dec 1973 | |
3845761 | Zaffaroni | Nov 1974 | |
3854480 | Zaffaroni | Dec 1974 | |
3948254 | Zaffaroni | Apr 1976 | |
3952737 | Lipfert et al. | Apr 1976 | |
3995633 | Gougeon | Dec 1976 | |
4007249 | Erb | Feb 1977 | |
4066075 | Hughes | Jan 1978 | |
4198965 | Strickman et al. | Apr 1980 | |
4200090 | Drobish | Apr 1980 | |
4219016 | Drobish et al. | Aug 1980 |
Number | Date | Country |
---|---|---|
2158226 | May 1973 | DEX |
Entry |
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Parfar International Workshop on New Developments in Vaginal Contraception, World Health Organization. |