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发明名称
摘要
申请公布号
DE2109900(A1)
申请公布日期
1971.09.30
申请号
DE19712109900
申请日期
1971.03.02
申请人
发明人
分类号
C09B62/04;C09B62/006;C09B62/012;C09B62/44;(IPC1-7):C09B62/08
主分类号
C09B62/04
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