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发明名称
DRILL RIGS
摘要
申请公布号
CA779147(A)
申请公布日期
1968.02.27
申请号
CAD779147
申请日期
申请人
ATLAS COPCO AKTIEBOLAG
发明人
KARL M. HALLBERG;KARL-ERIK QVARNSTROM;CARL O. L. OTTOSSON
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