APPARATUS FOR DRILLING A FORMATION AND SELECTIVELY INJECTING THEREINTOH POROD,申请号PL19790218628-传众专利搜索

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发明名称	APPARATUS FOR DRILLING A FORMATION AND SELECTIVELY INJECTING THEREINTOH POROD
摘要
申请公布号	PL121705(B1)	申请公布日期	1982.05.31
申请号	PL19790218628	申请日期	1979.09.27
申请人		发明人
分类号	E21B;E21B33/068;E21C37/12;E21F5/18;(IPC1-7):E21B33/06	主分类号	E21B
代理机构		代理人
主权项
地址

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