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发明名称
摘要
申请公布号
GB1264824(A)
申请公布日期
1972.02.23
申请号
GBD1264824
申请日期
1969.06.17
申请人
发明人
分类号
H03K21/02;H03K23/00
主分类号
H03K21/02
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