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发明名称
摘要
申请公布号
BE684495(A)
申请公布日期
1967.01.13
申请号
BED684495
申请日期
1966.07.22
申请人
发明人
分类号
H03B29/00;H03C3/22;H04B15/02
主分类号
H03B29/00
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代理人
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