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经营范围
发明名称
Pipe tong
摘要
申请公布号
US2406520(A)
申请公布日期
1946.08.27
申请号
US19430490007
申请日期
1943.06.08
申请人
WILSON WILLIAM W
发明人
WILSON WILLIAM W.
分类号
E21B19/16
主分类号
E21B19/16
代理机构
代理人
主权项
地址
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