DRILLING FLUID FOR FREEZING DRILL-HOLES,申请号PL19790218621-传众专利搜索

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发明名称	DRILLING FLUID FOR FREEZING DRILL-HOLES
摘要
申请公布号	PL117843(B2)	申请公布日期	1981.08.31
申请号	PL19790218621	申请日期	1979.09.28
申请人		发明人
分类号	C09K;(IPC1-7):C09K7/02	主分类号	C09K
代理机构		代理人
主权项
地址

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