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发明名称
Verfahren und Vorrichtung zum Abfangen und Sichern des Hangenden im Streb
摘要
申请公布号
DE917121(C)
申请公布日期
1954.08.26
申请号
DE1951G006266
申请日期
1951.06.08
申请人
KONRAD GREBE
发明人
GREBE KONRAD
分类号
E21D15/60;E21D17/02;E21D23/00
主分类号
E21D15/60
代理机构
代理人
主权项
地址
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