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发明名称
摘要
申请公布号
SU448573(A1)
申请公布日期
1974.10.30
申请号
SU19731874633
申请日期
1973.01.05
申请人
发明人
分类号
(IPC1-7):H03K3/31
主分类号
(IPC1-7):H03K3/31
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代理人
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地址
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