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发明名称
摘要
申请公布号
JPH0648873(B2)
申请公布日期
1994.06.22
申请号
JP19900338565
申请日期
1990.11.30
申请人
发明人
分类号
H04R7/02;H04R31/00;(IPC1-7):H04R7/02
主分类号
H04R7/02
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