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发明名称
摘要
申请公布号
JPS5251626(U)
申请公布日期
1977.04.13
申请号
JP19750139897U
申请日期
1975.10.13
申请人
发明人
分类号
H04R9/02;H04R1/02;H04R1/22;H04R9/06;(IPC1-7):H04R1/02
主分类号
H04R9/02
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