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发明名称
摘要
申请公布号
JPS50137304(U)
申请公布日期
1975.11.12
申请号
JP19740049128U
申请日期
1974.04.30
申请人
发明人
分类号
C21B7/10;(IPC1-7):C21B7/10
主分类号
C21B7/10
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代理人
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