Improvements in or relating to systems for signalling over power mains,申请号GB19370006144-传众专利搜索

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发明名称	Improvements in or relating to systems for signalling over power mains
摘要
申请公布号	GB491028(A)	申请公布日期	1938.08.25
申请号	GB19370006144	申请日期	1937.03.01
申请人	"ERICSSON" OESTERREICHISCHE ELEKTRIZITAETS - AKTIENGESELLSCHAFT	发明人
分类号	H02J13/00	主分类号	H02J13/00
代理机构		代理人
主权项
地址

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