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发明名称
Verfahren zum Herstellen von Ausbruechen in wasserfuehrendem Erdreich mittels eines Vortriebschildes
摘要
申请公布号
DE1409904(A1)
申请公布日期
1968.10.17
申请号
DE19621409904
申请日期
1962.04.12
申请人
LORENZ,DR.-ING. H.
发明人
HANS LORENZ,DR.-ING.
分类号
E21D9/06;E21D19/04
主分类号
E21D9/06
代理机构
代理人
主权项
地址
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