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发明名称
Fluid operated tool
摘要
申请公布号
US1970775(A)
申请公布日期
1934.08.21
申请号
US19310579216
申请日期
1931.12.05
申请人
THE CLEVELAND ROCK DRILL COMPANY
发明人
SLATCHER ALFRED G.
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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