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发明名称
Vorrichtung, die am vorderen Ende unterirdisch vorzutreibender Rohre angeordnet und mit einer steuerbaren Schneide versehen ist
摘要
申请公布号
DE1200335(B)
申请公布日期
1965.09.09
申请号
DE1962H044992
申请日期
1962.02.24
申请人
HOCHTIEF, A. G. FUER HOCH- UND TIEFBAUTEN, VORM. GEBR. HELFMANN
发明人
BRAEMER GUENTHER
分类号
E21D9/00;E21D9/06
主分类号
E21D9/00
代理机构
代理人
主权项
地址
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