Drilling fluids and methods of using same,申请号US19490077054-传众专利搜索

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发明名称	Drilling fluids and methods of using same
摘要
申请公布号	US2570492(A)	申请公布日期	1951.10.09
申请号	US19490077054	申请日期	1949.02.17
申请人	PHILLIPS PETROLEUM COMPANY	发明人	SCARTH VIRGIL
分类号	C09K8/20	主分类号	C09K8/20
代理机构		代理人
主权项
地址

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