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发明名称
Diamond drill
摘要
申请公布号
US3077936(A)
申请公布日期
1963.02.19
申请号
US19610150294
申请日期
1961.11.06
申请人
ARMAIS ARUTUNOFF
发明人
ARUTUNOFF ARMAIS
分类号
E21B10/04;E21B10/48
主分类号
E21B10/04
代理机构
代理人
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