Instrument for indicating or recording the specific gravity of gases,申请号GB19290021172-传众专利搜索

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发明名称	Instrument for indicating or recording the specific gravity of gases
摘要
申请公布号	GB331112(A)	申请公布日期	1930.06.26
申请号	GB19290021172	申请日期	1929.07.10
申请人	WILLIAM WILSON	发明人
分类号	G01N9/32	主分类号	G01N9/32
代理机构		代理人
主权项
地址

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