METHOD OF ASSESSING THE STABILITY OF ROOF OF STOPING CHAMBERS OF POTASSIUM MINES,申请号SU19874259916-传众专利搜索

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发明名称	METHOD OF ASSESSING THE STABILITY OF ROOF OF STOPING CHAMBERS OF POTASSIUM MINES
摘要
申请公布号	SU1490275(A1)	申请公布日期	1989.06.30
申请号	SU19874259916	申请日期	1987.06.10
申请人	URALSKIJ VNI PI GALURGII	发明人	TUPITSYN IVAN S,SU
分类号	E21C39/00	主分类号	E21C39/00
代理机构		代理人
主权项
地址

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