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发明名称
摘要
申请公布号
GB1229319(A)
申请公布日期
1971.04.21
申请号
GBD1229319
申请日期
1968.08.07
申请人
发明人
分类号
C09B23/01;C09B23/06;C09B23/08;G03C1/14;G03C1/28
主分类号
C09B23/01
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