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发明名称
摘要
申请公布号
JPS57500109(A)
申请公布日期
1982.01.21
申请号
JP19800501698
申请日期
1980.02.13
申请人
发明人
分类号
B22F3/12;B22F3/20
主分类号
B22F3/12
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