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发明名称
Perfectionnements aux appareils à cintrer les tuyaux
摘要
申请公布号
FR716470(A)
申请公布日期
1931.12.21
申请号
FRD716470
申请日期
1931.05.04
申请人
发明人
JENSEN CARL VILHELM
分类号
B21D7/06
主分类号
B21D7/06
代理机构
代理人
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