Drilling with aerated drilling fluid,申请号US19570691786-传众专利搜索

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发明名称	Drilling with aerated drilling fluid
摘要
申请公布号	US2995515(A)	申请公布日期	1961.08.08
申请号	US19570691786	申请日期	1957.10.23
申请人	PHILLIPS PETROLEUM COMPANY	发明人	BOBO ROY A.
分类号	C09K8/22;E21B21/16	主分类号	C09K8/22
代理机构		代理人
主权项
地址

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