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经营范围
发明名称
Procédé pour la fabrication de tubes métalliques, garnis intérieurement d'un profilage et tubes, tuyaux et gaines ainsi fabriqués
摘要
申请公布号
FR1082472(A)
申请公布日期
1954.12.29
申请号
FRD1082472
申请日期
1953.08.28
申请人
S. A. DUCHSCHER, WECKER
发明人
分类号
B21C37/20
主分类号
B21C37/20
代理机构
代理人
主权项
地址
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