Improvements in or relating to miners' safety lamps,申请号GB19560020813-传众专利搜索

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发明名称	Improvements in or relating to miners' safety lamps
摘要
申请公布号	GB819819(A)	申请公布日期	1959.09.09
申请号	GB19560020813	申请日期	1956.07.05
申请人	HARRY MARCEL NAYLOR SMITH	发明人
分类号	F21L23/00	主分类号	F21L23/00
代理机构		代理人
主权项
地址

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