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经营范围
发明名称
Perfectionnements apportés à la fabrication des tubes rejoints
摘要
申请公布号
FR702332(A)
申请公布日期
1931.04.04
申请号
FRD702332
申请日期
1930.09.18
申请人
发明人
BOURGIN JOSEPH
分类号
B21C37/10
主分类号
B21C37/10
代理机构
代理人
主权项
地址
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