Key-sender for telecommunication systems,申请号GB19460014066-传众专利搜索

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发明名称	Key-sender for telecommunication systems
摘要
申请公布号	GB601947(A)	申请公布日期	1948.05.14
申请号	GB19460014066	申请日期	1945.03.02
申请人	STANDARD TELEPHONES AND CABLES LIMITED	发明人
分类号	H04M1/23	主分类号	H04M1/23
代理机构		代理人
主权项
地址

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