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摘要
申请公布号
BE722783(A)
申请公布日期
1969.04.01
申请号
BED722783
申请日期
1968.10.23
申请人
发明人
分类号
C09B33/00;C09B33/06;C09B43/14;D06P3/24
主分类号
C09B33/00
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代理人
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