Improvements in switch operating mechanism for electric signalling circuits,申请号GB19380013897-传众专利搜索

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发明名称	Improvements in switch operating mechanism for electric signalling circuits
摘要
申请公布号	GB514558(A)	申请公布日期	1939.11.13
申请号	GB19380013897	申请日期	1938.05.10
申请人	PERCY CHARLES JOSEPH SPRAY	发明人
分类号	B66B19/06	主分类号	B66B19/06
代理机构		代理人
主权项
地址

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