PREVENTING BUCKLING IN DRILL STRING,申请号GB19830000263-传众专利搜索

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发明名称	PREVENTING BUCKLING IN DRILL STRING
摘要
申请公布号	GB8300263(D0)	申请公布日期	1983.02.09
申请号	GB19830000263	申请日期	1983.01.06
申请人	MOBIL OIL CORPORATION	发明人
分类号	E21B7/04;E21B44/00;E21B47/022;(IPC1-7):G01L5/16	主分类号	E21B7/04
代理机构		代理人
主权项
地址

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