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发明名称
摘要
申请公布号	DE3537472(C2)	申请公布日期	1987.11.12
申请号	DE19853537472	申请日期	1985.10.22
申请人	DEUTSCHE SCHACHTBAU- U. TIEFBOHRGESELLSCHAFT MBH, 4450 LINGEN, DE	发明人	FIEDLER, HELMUT;LIEHMANN, GERHARD, 4450 LINGEN, DE;LEFFERS, HEINRICH, 2990 PAPENBURG, DE;WEBER, JOACHIM, 4450 LINGEN, DE
分类号	E21B33/03;E21B43/00;(IPC1-7):E21B43/00	主分类号	E21B33/03
代理机构		代理人
主权项
地址

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