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经营范围
发明名称
Drilling rig
摘要
申请公布号
GB2097302(A)
申请公布日期
1982.11.03
申请号
GB19820005801
申请日期
1982.02.26
申请人
PERMANENT WAY EQUIPMENT THE CO LTD
发明人
分类号
E21B15/04;(IPC1-7):E21B7/02
主分类号
E21B15/04
代理机构
代理人
主权项
地址
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