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发明名称
摘要
申请公布号
NL7117520(A)
申请公布日期
1972.06.27
申请号
NL19710017520
申请日期
1971.12.20
申请人
发明人
分类号
C07C45/71;(IPC1-7):C07C49/42
主分类号
C07C45/71
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代理人
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地址
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