Spot-testing of coating metals,申请号US19380223550-传众专利搜索

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发明名称	Spot-testing of coating metals
摘要
申请公布号	US2192248(A)	申请公布日期	1940.03.05
申请号	US19380223550	申请日期	1938.08.06
申请人	GRANITE CITY STEEL COMPANY	发明人	VEEDER NICHOLAS P.
分类号	G01N33/20	主分类号	G01N33/20
代理机构		代理人
主权项
地址

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