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发明名称
DRILLING TOOL
摘要
申请公布号
CA415781(A)
申请公布日期
1943.10.12
申请号
CAD415781
申请日期
申请人
INGERSOLL-RAND COMPANY
发明人
BENJAMIN FRANKLIN SHEPHERD
分类号
主分类号
代理机构
代理人
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