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经营范围
发明名称
DRILLING RIG
摘要
申请公布号
GB1572639(A)
申请公布日期
1980.07.30
申请号
GB19780003650
申请日期
1978.01.30
申请人
CONRAD STORK BV
发明人
分类号
E21B19/084;(IPC1-7):E21B19/08;E21B3/02
主分类号
E21B19/084
代理机构
代理人
主权项
地址
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