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发明名称
Perfectionnements aux tubes métalliques minces de grand diamètre et à leur procédé de fabrication
摘要
申请公布号
FR1355023(A)
申请公布日期
1964.03.13
申请号
FR19630923464
申请日期
1963.02.01
申请人
LORRAINE-ESCAUT
发明人
分类号
B21C37/08;C21D1/42;C21D9/08;C21D9/50
主分类号
B21C37/08
代理机构
代理人
主权项
地址
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