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经营范围
发明名称
Overshot grapple
摘要
申请公布号
US2295630(A)
申请公布日期
1942.09.15
申请号
US19400361729
申请日期
1940.10.18
申请人
BOWEN GEORGE W
发明人
BOWEN GEORGE W.
分类号
E21B31/18
主分类号
E21B31/18
代理机构
代理人
主权项
地址
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