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发明名称
Blast hole drill pipe gripping mechanism
摘要
申请公布号
AU737131(B2)
申请公布日期
2001.08.09
申请号
AU20000062480
申请日期
2000.10.04
申请人
BUCYRUS INTERNATIONAL, INC.
发明人
ERWIN MOCK
分类号
B25B13/50;E21B19/16;(IPC1-7):E21B19/16
主分类号
B25B13/50
代理机构
代理人
主权项
地址
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