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经营范围
发明名称
Flaw detection
摘要
申请公布号
US2839918(A)
申请公布日期
1958.06.24
申请号
US19490085749
申请日期
1949.04.06
申请人
SWITZER ROBERT C
发明人
SWITZER ROBERT C.
分类号
G01N21/91
主分类号
G01N21/91
代理机构
代理人
主权项
地址
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