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发明名称
Dispositif perfectionné pour le doublage automatique des ovales dans les trains de laminoirs
摘要
申请公布号
FR714290(A)
申请公布日期
1931.11.10
申请号
FRD714290
申请日期
1930.07.09
申请人
COMPAGNIE DES FORGES DE CHATILLON, COMMENTRY & NEUVES-MAISONS
发明人
分类号
B21B39/28
主分类号
B21B39/28
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代理人
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