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发明名称
摘要
申请公布号
PL94366(B1)
申请公布日期
1977.07.30
申请号
PL19740172078
申请日期
1974.06.20
申请人
发明人
分类号
C07C31/28;(IPC1-7):C07C31/28
主分类号
C07C31/28
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