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经营范围
发明名称
Nedihulls boreenhet
摘要
申请公布号
NO20024216(D0)
申请公布日期
2002.09.04
申请号
NO20020004216
申请日期
2002.09.04
申请人
HUGHES UBDH TOOL COMPANY LLC
发明人
HUGHES, W JAMES;RENFRO, JIMMIE JOSH
分类号
E21B21/00;E21B21/12;E21B33/127;E21B43/12;(IPC1-7):E21B
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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