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发明名称
摘要
申请公布号
SU471651(A1)
申请公布日期
1975.05.25
申请号
SU19711712354
申请日期
1971.11.09
申请人
发明人
分类号
H03D3/06;(IPC1-7):H03D3/06
主分类号
H03D3/06
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代理人
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地址
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