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发明名称
摘要
申请公布号	JPS646638(Y2)	申请公布日期	1989.02.21
申请号	JP19830062457U	申请日期	1983.04.26
申请人		发明人
分类号	H04R1/30;G10K11/02;(IPC1-7):H04R1/30	主分类号	H04R1/30
代理机构		代理人
主权项
地址

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