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发明名称
Apparatus and method for detecting defects in electrically conductive objects
摘要
申请公布号
US2150922(A)
申请公布日期
1939.03.21
申请号
US19360101978
申请日期
1936.09.22
申请人
HAY DONALD L
发明人
HAY DONALD L.
分类号
G01N27/90
主分类号
G01N27/90
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代理人
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