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发明名称
Core drill bit with extended matrix height
摘要
申请公布号
AU2011201709(B2)
申请公布日期
2013.03.28
申请号
AU20110201709
申请日期
2011.04.15
申请人
LONGYEAR TM, INC.
发明人
DRIVDAHL, KRISTIAN SHAYNE;RUPP, MICHAEL
分类号
E21B10/26
主分类号
E21B10/26
代理机构
代理人
主权项
地址
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