Improvements in and relating to light sensitive signalling devices,申请号GB19470014519-传众专利搜索

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发明名称	Improvements in and relating to light sensitive signalling devices
摘要
申请公布号	GB633440(A)	申请公布日期	1949.12.19
申请号	GB19470014519	申请日期	1947.06.02
申请人	LONDEX LIMITED;ALEC PETER BESSON	发明人
分类号	H05B39/08	主分类号	H05B39/08
代理机构		代理人
主权项
地址

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