Gasanzeigende Grubenlampe,申请号DENDATF075177D-传众专利搜索

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发明名称	Gasanzeigende Grubenlampe
摘要
申请公布号	DE600883(C)	申请公布日期	1934.08.02
申请号	DENDATF075177D	申请日期
申请人	FRIEMANN & WOLF G.M.B.H.	发明人
分类号	F21L23/00;F21L27/00;G01N1/22	主分类号	F21L23/00
代理机构		代理人
主权项
地址

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