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发明名称
PREPARATION PROCESS FOR 4-PREGNENE DERIVATIVES
摘要
申请公布号
KR1019870001904(B1)
申请公布日期
1987.10.21
申请号
KR1019810004728
申请日期
1981.12.04
申请人
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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