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发明名称
摘要
申请公布号
SU552699(A1)
申请公布日期
1977.03.30
申请号
SU19731888358
申请日期
1973.02.19
申请人
发明人
分类号
H03K21/18;(IPC1-7):H03K21/18
主分类号
H03K21/18
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代理人
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