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发明名称
摘要
申请公布号
NL6700076(A)
申请公布日期
1967.07.04
申请号
NL19670000076
申请日期
1967.01.03
申请人
发明人
分类号
H04R1/20;H04R1/22;H04R1/40
主分类号
H04R1/20
代理机构
代理人
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地址
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