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发明名称
摘要
申请公布号
SU427351(A1)
申请公布日期
1974.05.05
申请号
SU19711725023
申请日期
1971.12.14
申请人
发明人
分类号
G06K11/04;G06K7/14;G06K11/00;(IPC1-7):G06K11/00
主分类号
G06K11/04
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代理人
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