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发明名称
Hydraulic drilling method and automatic control therefor
摘要
申请公布号
US1884297(A)
申请公布日期
1932.10.25
申请号
US19280272236
申请日期
1928.04.23
申请人
SCLATER KENNETH C;BENNETT EDWIN O
发明人
SCLATER KENNETH C.;BENNETT EDWIN O.
分类号
E21B19/08;E21B44/06
主分类号
E21B19/08
代理机构
代理人
主权项
地址
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