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经营范围
发明名称
Reversible tubing elevator
摘要
申请公布号
US3309130(A)
申请公布日期
1967.03.14
申请号
US19650434042
申请日期
1965.02.19
申请人
ARROWOOD HUBERT L
发明人
ARROWOOD HUBERT L.
分类号
E21B19/06
主分类号
E21B19/06
代理机构
代理人
主权项
地址
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