Drillable well liner,申请号US19380185530-传众专利搜索

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发明名称	Drillable well liner
摘要
申请公布号	US2155129(A)	申请公布日期	1939.04.18
申请号	US19380185530	申请日期	1938.01.18
申请人	HALL ELWIN B;ARMENTROUT ARTHUR L	发明人	HALL ELWIN B.;ARMENTROUT ARTHUR L.
分类号	E21B43/08	主分类号	E21B43/08
代理机构		代理人
主权项
地址

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