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发明名称
摘要
申请公布号
JPH02150893(U)
申请公布日期
1990.12.27
申请号
JP19890058949U
申请日期
1989.05.22
申请人
发明人
分类号
H04R1/02;H04R1/28;(IPC1-7):H04R1/02
主分类号
H04R1/02
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代理人
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