Cement conditioner for well walls,申请号US19570649174-传众专利搜索

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发明名称	Cement conditioner for well walls
摘要
申请公布号	US2903073(A)	申请公布日期	1959.09.08
申请号	US19570649174	申请日期	1957.03.28
申请人	GEM OIL TOOL COMPANY, INC.	发明人	COYLE WILLIAM E.
分类号	E21B37/02	主分类号	E21B37/02
代理机构		代理人
主权项
地址

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