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经营范围
发明名称
Circulation sub
摘要
申请公布号
NO20055031(D0)
申请公布日期
2005.10.28
申请号
NO20050005031
申请日期
2005.10.28
申请人
WELLDECO AS
发明人
N. N.
分类号
E21B;(IPC1-7):E21B
主分类号
E21B
代理机构
代理人
主权项
地址
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