Method of preventing earth particles from being carried into a well bore in an incompetent earth formation,申请号US19510243251-传众专利搜索

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发明名称	Method of preventing earth particles from being carried into a well bore in an incompetent earth formation
摘要
申请公布号	US2674323(A)	申请公布日期	1954.04.06
申请号	US19510243251	申请日期	1951.08.23
申请人	THE DOW CHEMICAL COMPANY	发明人	CARDWELL PAUL H.
分类号	E21B43/04	主分类号	E21B43/04
代理机构		代理人
主权项
地址

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