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发明名称
TETNING.
摘要
申请公布号
NO773240(A)
申请公布日期
1979.03.22
申请号
NO19770003240
申请日期
1977.09.21
申请人
AKERS MEK. VERKSTED, A/S,
发明人
NOENSIE, NICK,;STANFIELD, J.N.,;PETTERSEN, PAAL,
分类号
E21B43/01;F16L;F16L5/02;F16L51/00;(IPC1-7):F16L/
主分类号
E21B43/01
代理机构
代理人
主权项
地址
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