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发明名称
Vorrichtung zum Abstuetzen der Waende von Graeben waehrend des Verlegens von Kanalisationsrohren od.dgl.
摘要
申请公布号
DE1634251(A1)
申请公布日期
1970.07.16
申请号
DE19651634251
申请日期
1965.08.06
申请人
BADER,ARTUR
发明人
BADER,ARTUR;FETZER,GUSTAV
分类号
E02D17/08
主分类号
E02D17/08
代理机构
代理人
主权项
地址
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