Improvements relating to devices for periodically opening and closing an electric circuit and selective apparatus employing such devices,申请号GB19420007599-传众专利搜索

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发明名称	Improvements relating to devices for periodically opening and closing an electric circuit and selective apparatus employing such devices
摘要
申请公布号	GB557852(A)	申请公布日期	1943.12.08
申请号	GB19420007599	申请日期	1942.06.04
申请人	STANDARD TELEPHONES AND CABLES LIMITED;GEORGE CLIFFORD HARTLEY;LEONARD POWELL LOWRY;FREDERICK HARRY BRAY	发明人
分类号	H04Q1/36	主分类号	H04Q1/36
代理机构		代理人
主权项
地址

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