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发明名称
Fluid operated tool
摘要
申请公布号
US2129566(A)
申请公布日期
1938.09.06
申请号
US19360113275
申请日期
1936.11.30
申请人
THE CLEVELAND ROCK DRILL COMPANY
发明人
CURTIS JOHN C.
分类号
E21B6/06
主分类号
E21B6/06
代理机构
代理人
主权项
地址
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