Improvements in or relating to apparatus for detecting the presence of poisonous gases or vapours in the atmosphere,申请号GB19380007748-传众专利搜索

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发明名称	Improvements in or relating to apparatus for detecting the presence of poisonous gases or vapours in the atmosphere
摘要
申请公布号	GB494882(A)	申请公布日期	1938.11.02
申请号	GB19380007748	申请日期	1938.03.12
申请人	HENRY THOMAS RINGROSE	发明人
分类号	G01N31/22	主分类号	G01N31/22
代理机构		代理人
主权项
地址

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