Method for examining metal for subsurface defects,申请号US19380209153-传众专利搜索

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发明名称	Method for examining metal for subsurface defects
摘要
申请公布号	US2260186(A)	申请公布日期	1941.10.21
申请号	US19380209153	申请日期	1938.05.20
申请人	M. W. KELLOGG CO	发明人	MCNUTT LOUIS C.
分类号	G01N25/00;G01N25/72;G01N33/20	主分类号	G01N25/00
代理机构		代理人
主权项
地址

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