VORRICHTUNG ZUM NIEDERBRINGEN VON GROSSLOCHBOHRUNGEN MIT UNGEFAEHR 1000 MM DURCHMESSER,申请号DD19870311604-传众专利搜索

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发明名称	VORRICHTUNG ZUM NIEDERBRINGEN VON GROSSLOCHBOHRUNGEN MIT UNGEFAEHR 1000 MM DURCHMESSER
摘要
申请公布号	DD282153(A7)	申请公布日期	1990.09.05
申请号	DD19870311604	申请日期	1987.12.29
申请人	VEB KOMBINAT KALI,DD	发明人	MATUSZCZYK,HORST,DD;SCHUETZE,WOLFGANG,DD
分类号	E21B7/28;(IPC1-7):E21B7/28	主分类号	E21B7/28
代理机构		代理人
主权项
地址

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