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发明名称
摘要
申请公布号	JPS4724971(U)	申请公布日期	1972.11.20
申请号	JP19710027847U	申请日期	1971.04.14
申请人		发明人
分类号	H04R1/00;A61B5/02;A61B8/00;A61B10/00;G01N29/04;G01N29/24;H04R17/00;(IPC1-7):H04R17/00;H01L41/10	主分类号	H04R1/00
代理机构		代理人
主权项
地址

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