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发明名称
Procédé de cintrage de tubes à chaud et à froid et machine permettant de réaliser le procédé
摘要
申请公布号
FR705684(A)
申请公布日期
1931.06.11
申请号
FRD705684
申请日期
1930.02.07
申请人
发明人
DARDELET HUGUES-LOUIS
分类号
B21D7/06
主分类号
B21D7/06
代理机构
代理人
主权项
地址
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