Drilling fluids containing synthetic resinous materials,申请号US19590789776-传众专利搜索

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发明名称	Drilling fluids containing synthetic resinous materials
摘要
申请公布号	US2976235(A)	申请公布日期	1961.03.21
申请号	US19590789776	申请日期	1959.01.29
申请人	SPERRY RUSSELL L	发明人	SPERRY RUSSELL L.
分类号	C09K8/20;C09K8/28	主分类号	C09K8/20
代理机构		代理人
主权项
地址

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