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发明名称
Clôture
摘要
申请公布号
CH508118(A)
申请公布日期
1971.05.31
申请号
CH19690010852
申请日期
1969.07.15
申请人
S. A. VALLOUREC (USINES A TUBES DE LORRAINE-ESCAUT ET VALLOUREC REUNIES)
发明人
BRO,JACQUES
分类号
E04H17/00;E04H17/06;E04H17/08;E04H17/10;E04H17/20;E04H17/22;(IPC1-7):E04H17/00
主分类号
E04H17/00
代理机构
代理人
主权项
地址
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