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经营范围
发明名称
Pipe handling device
摘要
申请公布号
US3312294(A)
申请公布日期
1967.04.04
申请号
US19640387459
申请日期
1964.08.04
申请人
WILSON MANUFACTURING
发明人
WILSON JOHN HART
分类号
E21B19/20
主分类号
E21B19/20
代理机构
代理人
主权项
地址
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