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发明名称
摘要
申请公布号
JPH0290648(U)
申请公布日期
1990.07.18
申请号
JP19880170600U
申请日期
1988.12.28
申请人
发明人
分类号
C21B7/16;(IPC1-7):C21B7/16
主分类号
C21B7/16
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代理人
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