,申请号JP19800070072U-传众专利搜索

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发明名称
摘要
申请公布号	JPS56172090(U)	申请公布日期	1981.12.18
申请号	JP19800070072U	申请日期	1980.05.21
申请人		发明人
分类号	H04R7/20;H04R31/00;(IPC1-7):H04R7/20	主分类号	H04R7/20
代理机构		代理人
主权项
地址

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