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经营范围
发明名称
Well drilling and servicing barge including bridge and rig structure and methods
摘要
申请公布号
GB764345(A)
申请公布日期
1956.12.28
申请号
GB19550000717
申请日期
1955.01.10
申请人
JOSEPH EUGENE LUCAS
发明人
分类号
E21B15/02
主分类号
E21B15/02
代理机构
代理人
主权项
地址
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