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发明名称
摘要
申请公布号
FR2291274(B1)
申请公布日期
1977.03.25
申请号
FR19740040655
申请日期
1974.11.14
申请人
KIEFFER JEAN
发明人
分类号
B21B1/16;C21D8/02;(IPC1-7):C21D7/00;B21B1/18;B21B41/08;B21B45/04;B21C47/18
主分类号
B21B1/16
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代理人
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地址
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