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发明名称
DICHTUNG FUER TUEBBING-SCHACHTAUSBAU.
摘要
申请公布号
DE1854411(U)
申请公布日期
1962.07.05
申请号
DE1960R020181U
申请日期
1960.03.22
申请人
RHEINSTAHL EISENWERKE GELSENKIRCHEN AKTIENGESELLSCHAFT
发明人
分类号
主分类号
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