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发明名称
摘要
申请公布号
SU448567(A1)
申请公布日期
1974.10.30
申请号
SU19711688467
申请日期
1971.07.30
申请人
发明人
分类号
H03G11/02;(IPC1-7):H03G11/02
主分类号
H03G11/02
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代理人
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地址
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