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发明名称
Procédé et dispositif pour le poinçonnage des corps creux d'une section quelconque
摘要
申请公布号
FR1469116(A)
申请公布日期
1967.02.10
申请号
FR19650043915
申请日期
1965.12.28
申请人
发明人
OSTHOFF LEOPOLD
分类号
B21D28/28
主分类号
B21D28/28
代理机构
代理人
主权项
地址
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