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经营范围
发明名称
Whip stock anchor
摘要
申请公布号
US2119746(A)
申请公布日期
1938.06.07
申请号
US19360063084
申请日期
1936.02.10
申请人
LANE EDWARD K
发明人
LANE EDWARD K.
分类号
E21B7/06;E21B7/08
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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