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发明名称
摘要
申请公布号
FR1576477(A)
申请公布日期
1969.08.01
申请号
FRD1576477
申请日期
1968.04.24
申请人
发明人
分类号
C09B41/00;C09B63/00;C09B67/08;C09B67/20
主分类号
C09B41/00
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代理人
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