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发明名称
摘要
申请公布号
JPS63175859(U)
申请公布日期
1988.11.15
申请号
JP19870066826U
申请日期
1987.05.06
申请人
发明人
分类号
H04R23/00;G01N29/04;(IPC1-7):G01N29/04
主分类号
H04R23/00
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代理人
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