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发明名称
SELBSTANTREIBBARES RAMMBOHRGERAET, INSBESONDERE FUER DIE HERSTELLUNG VON ROHRFOERMIGEN ERDBOHRUNGEN
摘要
申请公布号
DE3911467(A1)
申请公布日期
1990.10.11
申请号
DE19893911467
申请日期
1989.04.08
申请人
TRACTO-TECHNIK PAUL SCHMIDT MASCHINENFABRIK KG, 5940 LENNESTADT, DE
发明人
SCHMELZER, ROBERT, DIPL.-ING., 5940 LENNESTADT, DE
分类号
E21B7/24;E21B4/14;E21B4/20;E21B7/06;E21B7/26;E21B47/022;E21D9/08;E21D9/093
主分类号
E21B7/24
代理机构
代理人
主权项
地址
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