Improvements in apparatus for indicating and/or recording the density of solid particles, such as smoke, in a gaseous medium,申请号GB19370017600-传众专利搜索

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发明名称	Improvements in apparatus for indicating and/or recording the density of solid particles, such as smoke, in a gaseous medium
摘要
申请公布号	GB497491(A)	申请公布日期	1938.12.21
申请号	GB19370017600	申请日期	1937.06.24
申请人	ELLIOTT BROTHERS (LONDON) LIMITED;CYRIL FRANK PIZZEY	发明人
分类号	G01N21/53	主分类号	G01N21/53
代理机构		代理人
主权项
地址

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