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发明名称
FORMLING FUER DIE HERSTELLUNG VON ABFLUSSKANAELEN ODER SONSTIGEN WASSERABFLUSSLEITUNGEN, BEISPIELSWEISE VON WASSERSEIGEN IN TUNNELS, BERGBAU- UNTERTAGESTRECKEN OD. DGL.
摘要
申请公布号
DE1707211(U)
申请公布日期
1955.09.22
申请号
DE195500H9225U
申请日期
1955.07.25
申请人
WALTER HARTWIG
发明人
WALTER HARTWIG
分类号
主分类号
代理机构
代理人
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