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发明名称
Procédé pour supprimer les causes de tensions internes dans les rails et tous profilés en général
摘要
申请公布号
FR1007822(A)
申请公布日期
1952.05.12
申请号
FRD1007822
申请日期
1948.04.05
申请人
发明人
RAVAUDET PAUL
分类号
B21B45/02
主分类号
B21B45/02
代理机构
代理人
主权项
地址
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