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发明名称
RAMMBOHRGERAET UND VERFAHREN ZU SEINER STEUERUNG
摘要
申请公布号
DE3800408(A1)
申请公布日期
1989.07.13
申请号
DE19883800408
申请日期
1988.01.09
申请人
TERRA AG FUER TIEFBAUTECHNIK, STRENGELBACH, CH
发明人
JENNE, GUSTAV, DR.-ING., 4300 ESSEN, DE;JENNE, DIETMAR, DIPL.-WIRTSCH.-ING., STRENGELBACH, CH
分类号
E21B7/26;E21B4/14
主分类号
E21B7/26
代理机构
代理人
主权项
地址
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