WELL SERVICING FLUID FOR TRENCHLESS DIRECTIONAL DRILLING,申请号EP19980913329-传众专利搜索

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发明名称	WELL SERVICING FLUID FOR TRENCHLESS DIRECTIONAL DRILLING
摘要
申请公布号	EP0973843(A1)	申请公布日期	2000.01.26
申请号	EP19980913329	申请日期	1998.03.31
申请人	DRESSER INDUSTRIES, INC.	发明人	LIAO, W., ANDREW
分类号	C09K8/04;C09K8/20;C09K17/32;(IPC1-7):C09K7/02	主分类号	C09K8/04
代理机构		代理人
主权项
地址

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