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发明名称
摘要
申请公布号
FR2006704(A1)
申请公布日期
1970.01.02
申请号
FR19690012615
申请日期
1969.04.22
申请人
WHITTAKER CORP
发明人
分类号
B21C23/01;B22F3/20;C22C1/10;(IPC1-7):22C19/00
主分类号
B21C23/01
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