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发明名称
Hole opener with multisized, replaceable arms and cutters
摘要
申请公布号
AU774587(B2)
申请公布日期
2004.07.01
申请号
AU20000050150
申请日期
2000.05.15
申请人
ALLEN KENT RIVES
发明人
ALLEN KENT RIVES
分类号
E21B10/10;E21B10/28;(IPC1-7):E21B10/30
主分类号
E21B10/10
代理机构
代理人
主权项
地址
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