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发明名称
摘要
申请公布号
JPS5420171(B2)
申请公布日期
1979.07.20
申请号
JP19750021840
申请日期
1975.02.24
申请人
发明人
分类号
B22D17/20;B22D17/00;B29C37/00;B29C45/00;F15B15/14
主分类号
B22D17/20
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代理人
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