METHOD FOR RETRIEVING WELL CASINGS USING AN INTERNAL GRIPPING DEVICE,申请号AU19920014151-传众专利搜索

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发明名称	METHOD FOR RETRIEVING WELL CASINGS USING AN INTERNAL GRIPPING DEVICE
摘要
申请公布号	AU1415192(A)	申请公布日期	1992.10.06
申请号	AU19920014151	申请日期	1992.03.09
申请人	ENTERRA (U.K.) LIMITED	发明人	HECTOR MCDONALD;IAN ALEXANDER GILLIES
分类号	E21B31/16;E21B31/20	主分类号	E21B31/16
代理机构		代理人
主权项
地址

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