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发明名称
Method and apparatus for testing metal articles for defects
摘要
申请公布号
US2124577(A)
申请公布日期
1938.07.26
申请号
US19320589887
申请日期
1932.01.30
申请人
STEEL & TUBES, INC.
发明人
KNERR HORACE C.
分类号
G01N27/20
主分类号
G01N27/20
代理机构
代理人
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地址
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