Drilling fluid,申请号US19470769310-传众专利搜索

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发明名称	Drilling fluid
摘要
申请公布号	US2614979(A)	申请公布日期	1952.10.21
申请号	US19470769310	申请日期	1947.08.18
申请人	PHILLIPS PETROLEUM COMPANY	发明人	HUTCHINSON WILLIAM M.
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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