Improvements relating to electrical relays,申请号GB19290023415-传众专利搜索

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发明名称	Improvements relating to electrical relays
摘要
申请公布号	GB318916(A)	申请公布日期	1930.05.01
申请号	GB19290023415	申请日期	1929.07.30
申请人	GENERAL RAILWAY SIGNAL COMPANY	发明人
分类号	H01H51/22	主分类号	H01H51/22
代理机构		代理人
主权项
地址

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