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发明名称
Oppblåsbar rörformet hylse rör eller for avstenging av en brönn eller et rör
摘要
申请公布号
NO980428(D0)
申请公布日期
1998.01.30
申请号
NO19980000428
申请日期
1998.01.30
申请人
DRILLFLEX
发明人
SALTEL, JEAN-LOUIS
分类号
E21B23/06;E21B33/127;E21B43/10;F16L55/12;F16L55/134;(IPC1-7):E21B;F16L
主分类号
E21B23/06
代理机构
代理人
主权项
地址
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