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发明名称
摘要
申请公布号
SU377459(A2)
申请公布日期
1973.04.17
申请号
SU19711602050
申请日期
1971.03.01
申请人
发明人
分类号
D21F1/24;(IPC1-7):D21F1/24
主分类号
D21F1/24
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代理人
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