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发明名称
摘要
申请公布号
BE700722(A)
申请公布日期
1967.12.01
申请号
BED700722
申请日期
1967.06.30
申请人
发明人
分类号
H03G5/04;H04R25/00
主分类号
H03G5/04
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代理人
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地址
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