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发明名称
摘要
申请公布号
JP2815709(B2)
申请公布日期
1998.10.27
申请号
JP19900408802
申请日期
1990.12.28
申请人
发明人
分类号
B23K20/00;B23K20/04;C22C21/00;C23F13/00;C23F13/14;(IPC1-7):C22C21/00
主分类号
B23K20/00
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代理人
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