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发明名称
Sammensatt rörkonstruksjon
摘要
申请公布号
NO960184(D0)
申请公布日期
1996.01.16
申请号
NO19960000184
申请日期
1996.01.16
申请人
HEAD, PHILIP
发明人
HEAD, PHILIP
分类号
E21B17/01;E21B19/22;E21B33/076;E21B41/10;(IPC1-7):E21B
主分类号
E21B17/01
代理机构
代理人
主权项
地址
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