SYSTEM FOR DETECTING FAULT OF SOUND ACCUMULATION DEVICE,申请号JP19890170556-传众专利搜索

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发明名称	SYSTEM FOR DETECTING FAULT OF SOUND ACCUMULATION DEVICE
摘要
申请公布号	JPH0335655(A)	申请公布日期	1991.02.15
申请号	JP19890170556	申请日期	1989.06.30
申请人	NEC CORP	发明人	TAKEI MASARO
分类号	H04M3/50;H04M3/22	主分类号	H04M3/50
代理机构		代理人
主权项
地址

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