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经营范围
发明名称
Flottörventilenhet for nedihulls rörgods
摘要
申请公布号
NO20013098(A)
申请公布日期
2001.12.24
申请号
NO20010003098
申请日期
2001.06.21
申请人
BAKER HUGHES INC
发明人
BAUGH, JOHN LINDLEY
分类号
E21B21/10;E21B34/14;(IPC1-7):E21B34/12
主分类号
E21B21/10
代理机构
代理人
主权项
地址
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