Exchange equipment for emergency telephones,申请号GB19800035588-传众专利搜索

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发明名称	Exchange equipment for emergency telephones
摘要
申请公布号	GB2064916(A)	申请公布日期	1981.06.17
申请号	GB19800035588	申请日期	1980.11.05
申请人	DEUTSCHE TELEPHONWERKE UND KABELINDUSTRIE AG	发明人
分类号	H04M11/04;(IPC1-7):H04M11/04	主分类号	H04M11/04
代理机构		代理人
主权项
地址

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