Medium for detecting impurities in gases,申请号GB19340015370-传众专利搜索

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发明名称	Medium for detecting impurities in gases
摘要
申请公布号	GB431809(A)	申请公布日期	1935.07.16
申请号	GB19340015370	申请日期	1934.05.23
申请人	BERNHARD DRAEGER	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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