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经营范围
发明名称
Thickness indicator
摘要
申请公布号
US2563254(A)
申请公布日期
1951.08.07
申请号
US19480026040
申请日期
1948.05.10
申请人
HYDRIL CORPORATION
发明人
LEWIS GEORGE E.
分类号
G01B7/06;G01N27/82
主分类号
G01B7/06
代理机构
代理人
主权项
地址
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