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发明名称
摘要
申请公布号
FR2286883(B3)
申请公布日期
1977.07.15
申请号
FR19740033437
申请日期
1974.10.04
申请人
NICKEL
发明人
分类号
B22F9/18;B22F9/22;B22F9/24;C22B3/32;(IPC1-7):22B23/04
主分类号
B22F9/18
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