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发明名称
AUTOMATISCHE VORSCHUBKRAFTREGELUNG BEIM GESTEINSBOHREN IN ABHAENGIGKEIT DER GESTEINSFESTIGKEIT
摘要
申请公布号
DD260407(A3)
申请公布日期
1988.09.28
申请号
DD19860291375
申请日期
1986.06.17
申请人
SDAG WISMUT,DD
发明人
HOFERICHTER,FRANK,DD;STOLTZE,HARALD,DD;WALTHER,MANFRED,DD;KRYZEK,HERBERT,DD
分类号
E21B44/00;(IPC1-7):E21B44/00
主分类号
E21B44/00
代理机构
代理人
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