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发明名称
Fremgangsmate og anordning ved sementeringsventil
摘要
申请公布号
NO20053880(D0)
申请公布日期
2005.08.18
申请号
NO20050003880
申请日期
2005.08.18
申请人
PEAK WELL SOLUTIONS AS
发明人
REVHEIM SVEN
分类号
E21B21/10;E21B33/14;F16L;(IPC1-7):F16L
主分类号
E21B21/10
代理机构
代理人
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地址
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