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发明名称
摘要
申请公布号
GB1303951(A)
申请公布日期
1973.01.24
申请号
GB19710022217
申请日期
1971.04.19
申请人
发明人
分类号
G01R19/12;G06G7/186;(IPC1-7):G06G7/18
主分类号
G01R19/12
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