Improvements in or relating to submarine electric signalling cables,申请号GB19300001446-传众专利搜索

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发明名称	Improvements in or relating to submarine electric signalling cables
摘要
申请公布号	GB349105(A)	申请公布日期	1931.05.15
申请号	GB19300001446	申请日期	1930.01.15
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人
分类号	H01B7/14	主分类号	H01B7/14
代理机构		代理人
主权项
地址

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