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发明名称
VORRICHTUNG ZUM VORTRIEB VON VORSCHUBBAUWERKEN
摘要
申请公布号
DE2021839(B2)
申请公布日期
1977.02.17
申请号
DE19702021839
申请日期
1970.05.05
申请人
发明人
分类号
E21D9/00;E21D9/12;(IPC1-7):E21D9/12
主分类号
E21D9/00
代理机构
代理人
主权项
地址
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