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发明名称
摘要
申请公布号
JPS5223945(Y2)
申请公布日期
1977.05.31
申请号
JP19730081418U
申请日期
1973.07.09
申请人
发明人
分类号
H04R1/04;G11B20/04;G11B33/12;(IPC1-7):H04R1/04;G11B1/00
主分类号
H04R1/04
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