Improvements relating to railway train communication systems,申请号GB19460000254-传众专利搜索

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发明名称	Improvements relating to railway train communication systems
摘要
申请公布号	GB605681(A)	申请公布日期	1948.07.28
申请号	GB19460000254	申请日期	1946.01.03
申请人	WESTINGHOUSE BRAKE & SIGNAL COMPANY LIMITED	发明人
分类号	H04M7/16	主分类号	H04M7/16
代理机构		代理人
主权项
地址

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