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发明名称
UNDERWATER WELLHEAD CONNECTOR
摘要
申请公布号
GB1262754(A)
申请公布日期
1972.02.09
申请号
GB19690025844
申请日期
1969.05.21
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V.
发明人
WILLIAM HENRY PETERSEN
分类号
E21B33/038
主分类号
E21B33/038
代理机构
代理人
主权项
地址
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