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发明名称
摘要
申请公布号
JPS4711690(Y1)
申请公布日期
1972.05.01
申请号
JP19680065685U
申请日期
1968.07.30
申请人
发明人
分类号
(IPC1-7):C21B7/12;F27B1/20
主分类号
(IPC1-7):C21B7/12
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