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经营范围
发明名称
Apparatus for drilling wells
摘要
申请公布号
US2653796(A)
申请公布日期
1953.09.29
申请号
US19480028206
申请日期
1948.05.20
申请人
KERRMCGEE OIL INDUSTRIES, INC.
发明人
MCGEE DEAN A.;SEALE TOM
分类号
E02B17/02;E21B15/02;E21B19/14;E21B19/15
主分类号
E02B17/02
代理机构
代理人
主权项
地址
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