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发明名称
Wuehlvorrichtung zum Hindurchfuehren eines Rohres in seiner Querrichtung durch geschlossenen Erdboden
摘要
申请公布号
DE543062(C)
申请公布日期
1932.02.02
申请号
DED543062D
申请日期
申请人
BODENVEREDELUNGS-GESELLSCHAFT M. B. H.
发明人
分类号
E21B7/00
主分类号
E21B7/00
代理机构
代理人
主权项
地址
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