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发明名称
Tool guide
摘要
申请公布号
US2195871(A)
申请公布日期
1940.04.02
申请号
US19380210043
申请日期
1938.05.25
申请人
THE HEWITT-KUSTER CO.
发明人
KUSTER VIVIAN EDWARD
分类号
E21B17/10
主分类号
E21B17/10
代理机构
代理人
主权项
地址
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