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发明名称
INTERMITTENT ROTARY DOWN-HOLE DRILLING MACHINE
摘要
申请公布号
JPS60159293(A)
申请公布日期
1985.08.20
申请号
JP19840010900
申请日期
1984.01.24
申请人
BURUUNO ETSUCHI UORUTAA
发明人
BURUUNO ETSUCHI UORUTAA
分类号
E21B4/10;E21B4/06
主分类号
E21B4/10
代理机构
代理人
主权项
地址
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