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发明名称
Well reamer
摘要
申请公布号
US2217592(A)
申请公布日期
1940.10.08
申请号
US19380222340
申请日期
1938.08.01
申请人
L. G. S. DEVICES CORPORATION
发明人
KRICK ARTHUR E.;STARKEY WILLIAM CARLETON
分类号
E21B10/30
主分类号
E21B10/30
代理机构
代理人
主权项
地址
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