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发明名称
POSITIONING MECHANISM FOR ROCK DRILL
摘要
申请公布号
JPS5536587(A)
申请公布日期
1980.03.14
申请号
JP19790050209
申请日期
1979.04.23
申请人
COOPER IND INC
发明人
JIEEMUSU AARU MEIYAA
分类号
E21B19/24;E21B7/02;E21B15/00;E21B15/04;E21B19/08
主分类号
E21B19/24
代理机构
代理人
主权项
地址
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