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发明名称
HYDRAULIC RUNNING AND RELEASE TOOL WITH MECHANICAL EMERGENCY RELEASE
摘要
申请公布号
GB9025216(D0)
申请公布日期
1991.01.02
申请号
GB19900025216
申请日期
1990.11.20
申请人
TEXAS IRON WORKS INC.
发明人
分类号
E21B23/04;E21B23/06;E21B43/10
主分类号
E21B23/04
代理机构
代理人
主权项
地址
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