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发明名称
摘要
申请公布号
JPH0118980(B2)
申请公布日期
1989.04.10
申请号
JP19840052004
申请日期
1984.03.16
申请人
SHOWA ALUMINIUM CO LTD
发明人
IWAI ICHIRO
分类号
B21C23/00;C22C21/02;C22F1/00;C22F1/043
主分类号
B21C23/00
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代理人
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