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发明名称
摘要
申请公布号
DE2048561(A1)
申请公布日期
1971.04.22
申请号
DE19702048561
申请日期
1970.10.02
申请人
发明人
分类号
C09B23/00;C09B23/01;G03C1/498;(IPC1-7):G03C1/00
主分类号
C09B23/00
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代理人
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