LOOP STATUS VERIFICATION SYSTEM,申请号GB19890015767-传众专利搜索

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发明名称	LOOP STATUS VERIFICATION SYSTEM
摘要
申请公布号	GB8915767(D0)	申请公布日期	1989.08.31
申请号	GB19890015767	申请日期	1989.07.10
申请人	KEPTEL INC	发明人
分类号	H04M3/30;H04M11/04;H04Q1/44;H04Q3/60	主分类号	H04M3/30
代理机构		代理人
主权项
地址

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