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发明名称
摘要
申请公布号
JP2597172(B2)
申请公布日期
1997.04.02
申请号
JP19880320900
申请日期
1988.12.20
申请人
发明人
分类号
B22C9/00;(IPC1-7):B22C9/00
主分类号
B22C9/00
代理机构
代理人
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地址
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