METHOD FOR OPTIMIZING OPERATION OF A MINING HOLE IN HOLEMINING OF SULPHUR,申请号PL19880272378-传众专利搜索

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发明名称	METHOD FOR OPTIMIZING OPERATION OF A MINING HOLE IN HOLEMINING OF SULPHUR
摘要
申请公布号	PL152019(B1)	申请公布日期	1990.10.31
申请号	PL19880272378	申请日期	1988.05.09
申请人		发明人
分类号	E21B;E21B43/28;(IPC1-7):E21B43/28	主分类号	E21B
代理机构		代理人
主权项
地址

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