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发明名称
摘要
申请公布号
JPH03503349(A)
申请公布日期
1991.07.25
申请号
JP19890505554
申请日期
1989.05.09
申请人
发明人
分类号
H04R1/02;H04N5/64
主分类号
H04R1/02
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代理人
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