Improvements relating to electro magnetic time delay relays,申请号GB19370031667-传众专利搜索

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发明名称	Improvements relating to electro magnetic time delay relays
摘要
申请公布号	GB484458(A)	申请公布日期	1938.05.05
申请号	GB19370031667	申请日期	1937.11.17
申请人	THE BRITISH THOMSON-HOUSTON COMPANY LIMITED	发明人
分类号	H01H47/18;H03K17/28	主分类号	H01H47/18
代理机构		代理人
主权项
地址

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