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经营范围
发明名称
UNTERWASSER-BOHRLOCHKOPFAUFBAU.
摘要
申请公布号
AT23901(T)
申请公布日期
1986.12.15
申请号
AT19830304756T
申请日期
1983.08.17
申请人
CAMERON IRON WORKS, INC.
发明人
KELLY, THOMAS P.
分类号
E21B33/035;(IPC1-7):E21B33/035
主分类号
E21B33/035
代理机构
代理人
主权项
地址
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