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发明名称
摘要
申请公布号
FR2525505(B1)
申请公布日期
1985.05.17
申请号
FR19820006864
申请日期
1982.04.21
申请人
BENTZMANN BERTRAND DE
发明人
分类号
B21F23/00;B21D11/12;B21D43/00;(IPC1-7):B21D11/12;B21D43/20;E04C5/01
主分类号
B21F23/00
代理机构
代理人
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