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发明名称
METHOD AND APPARATUS OF DRILLING UNDERWATER WELLS
摘要
申请公布号
CA713939(A)
申请公布日期
1965.07.20
申请号
CAD713939
申请日期
申请人
SHELL OIL COMPANY
发明人
BRUCE J. WATKINS;GLENN D. JOHNSON;WILLIAM F. BATES
分类号
主分类号
代理机构
代理人
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