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SCHRAEMKETTE ZUR HERSTELLUNG TIEFER ERDSCHLITZE

申请公布号:DD300653(A5)

申请号:DD19880312050

申请日期:1988.01.05

申请公布日期:1992.06.25

申请人:
VEB BRAUNKOHLENBOHRUNGEN UND SCHACHTBAU WELZOW

发明人:KUHNERT GERD

分类号:E02D17/13;(IPC1-7):E21C25/06

主分类号:E02D17/13

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