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发明名称
摘要
申请公布号
JPS50154725(U)
申请公布日期
1975.12.22
申请号
JP19740067825U
申请日期
1974.06.10
申请人
发明人
分类号
H04R1/02;(IPC1-7):H04R1/02
主分类号
H04R1/02
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代理人
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地址
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