IMPROVED MULTIPLE-STAGE COAL SEAM FRACING METHOD,申请号GB19860024798-传众专利搜索

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发明名称	IMPROVED MULTIPLE-STAGE COAL SEAM FRACING METHOD
摘要
申请公布号	GB2181767(B)	申请公布日期	1988.06.22
申请号	GB19860024798	申请日期	1986.10.16
申请人	WILLIAM * PERLMAN	发明人	WILLIAM * PERLMAN
分类号	C09K8/72;E21B43/00;E21B43/26;E21B43/267;(IPC1-7):E21B43/25;E21B43/27	主分类号	C09K8/72
代理机构		代理人
主权项
地址

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