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发明名称
SICHERHEITSVORRICHTUNG FUER SENKRECHEN VERBAU VON MITTELS BAGGER AUSGEHOBENEN LEITUNGSGRAEBEN.
摘要
申请公布号
DE1746990(U)
申请公布日期
1957.06.13
申请号
DE195500H9292U
申请日期
1955.07.28
申请人
HAUTZEL & KOBECKE
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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