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发明名称
摘要
申请公布号
JPH02111999(U)
申请公布日期
1990.09.07
申请号
JP19890019389U
申请日期
1989.02.20
申请人
发明人
分类号
H04R17/00;(IPC1-7):H04R17/00
主分类号
H04R17/00
代理机构
代理人
主权项
地址
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