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发明名称
Procédé pour l'écrouissage du métal constituant la paroi continue d'un corps creux et corps creux obtenu par ce procédé
摘要
申请公布号
FR831867(A)
申请公布日期
1938.09.15
申请号
FRD831867
申请日期
1937.04.19
申请人
发明人
FERRAND GEORGES, AUGUSTE
分类号
B21D26/02
主分类号
B21D26/02
代理机构
代理人
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