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发明名称
摘要
申请公布号	JPS57171014(U)	申请公布日期	1982.10.28
申请号	JP19810058933U	申请日期	1981.04.23
申请人		发明人
分类号	H04R1/00;E04B5/02;E04C2/52;H04R1/02;(IPC1-7):E04C2/52	主分类号	H04R1/00
代理机构		代理人
主权项
地址

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