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发明名称
摘要
申请公布号
JPS6360878(B2)
申请公布日期
1988.11.25
申请号
JP19810012925
申请日期
1981.02.02
申请人
发明人
分类号
G21D1/02;G21C1/02;G21C9/00;G21D1/00
主分类号
G21D1/02
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