METHOD OF SHIFTING POWERED ROOF SUPPORT SECTIONS AT EXCAVATING THICK COAL SEAMS,申请号SU19772460540-传众专利搜索

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发明名称	METHOD OF SHIFTING POWERED ROOF SUPPORT SECTIONS AT EXCAVATING THICK COAL SEAMS
摘要
申请公布号	SU617597(A1)	申请公布日期	1978.07.30
申请号	SU19772460540	申请日期	1977.03.11
申请人	VNII GORNOJ GEOMEKHANIKI MARKSHEJDERSKOGO DELA	发明人	KRUGLIKOV VYACHESLAV P,SU;ROZENBAUM MARK A,SU
分类号	(IPC1-7):E21C41/04	主分类号	(IPC1-7):E21C41/04
代理机构		代理人
主权项
地址

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