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发明名称
摘要
申请公布号
JPS5627040(B2)
申请公布日期
1981.06.22
申请号
JP19730092755
申请日期
1973.08.18
申请人
发明人
分类号
H04R17/00;G01N29/24;H03H9/02
主分类号
H04R17/00
代理机构
代理人
主权项
地址
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