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发明名称
ROCK DRILL POSITIONING MECHANISM
摘要
申请公布号
AU8295682(A)
申请公布日期
1982.09.02
申请号
AU19820082956
申请日期
1982.04.23
申请人
COOPER INDUSTRIES, INC.
发明人
JAMES READE MAYER
分类号
E21B7/02;E21B19/081
主分类号
E21B7/02
代理机构
代理人
主权项
地址
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