Improvements in or relating to electric lighting,申请号GB19290033884-传众专利搜索

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发明名称	Improvements in or relating to electric lighting
摘要
申请公布号	GB339748(A)	申请公布日期	1930.12.18
申请号	GB19290033884	申请日期	1929.11.07
申请人	JOHN LAWN	发明人
分类号	H01H9/16	主分类号	H01H9/16
代理机构		代理人
主权项
地址

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