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发明名称
Anordning ved ekspanderende pakningselement
摘要
申请公布号
NO20004176(A)
申请公布日期
2002.02.22
申请号
NO20000004176
申请日期
2000.08.21
申请人
UELAND, GEIR
发明人
UELAND, GEIR
分类号
E21B33/12;(IPC1-7):E21B33/128;E21B33/134
主分类号
E21B33/12
代理机构
代理人
主权项
地址
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