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发明名称
摘要
申请公布号
JPS5255243(U)
申请公布日期
1977.04.21
申请号
JP19750142621U
申请日期
1975.10.20
申请人
发明人
分类号
H04R1/10;(IPC1-7):H04R1/10
主分类号
H04R1/10
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代理人
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地址
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