THE METHOD OF LIQUIDATION OF A FIRE HAZARD AND GAS HAZARD IN MINING EXCAVATIONS,申请号PL19870268401-传众专利搜索

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发明名称	THE METHOD OF LIQUIDATION OF A FIRE HAZARD AND GAS HAZARD IN MINING EXCAVATIONS
摘要
申请公布号	PL268401(A2)	申请公布日期	1988.08.18
申请号	PL19870268401	申请日期	1987.10.22
申请人		发明人
分类号	E21F;E21F5/00;(IPC1-7):E21F/	主分类号	E21F
代理机构		代理人
主权项
地址

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