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发明名称
摘要
申请公布号
SU421957(A1)
申请公布日期
1974.03.30
申请号
SU19711693984
申请日期
1971.08.09
申请人
发明人
分类号
G01R31/26;(IPC1-7):G01R31/26
主分类号
G01R31/26
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代理人
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地址
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