Electrical liquid-contact switches,申请号GB19400015051-传众专利搜索

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发明名称	Electrical liquid-contact switches
摘要
申请公布号	GB544435(A)	申请公布日期	1942.04.13
申请号	GB19400015051	申请日期	1940.10.09
申请人	JOSEPH FRANCIS O'BRIEN	发明人
分类号	H01H29/20	主分类号	H01H29/20
代理机构		代理人
主权项
地址

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