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发明名称
摘要
申请公布号
DD127018(A1)
申请公布日期
1977.08.31
申请号
DD19760192497
申请日期
1976.04.26
申请人
发明人
分类号
H03G3/20;(IPC1-7):H03G3/20
主分类号
H03G3/20
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