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发明名称
POUTRE EN TREILLIS ET SON PROCEDE DE FABRICATION
摘要
申请公布号
FR2521199(B1)
申请公布日期
1987.10.16
申请号
FR19830001352
申请日期
1983.01.28
申请人
HACKER GMBH CO KG
发明人
HELMUT HACKER
分类号
B21F27/20;E04C5/065;(IPC1-7):E04C3/294;B21D47/01;B23K11/00
主分类号
B21F27/20
代理机构
代理人
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地址
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