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发明名称
摘要
申请公布号
JPS5919779(B2)
申请公布日期
1984.05.08
申请号
JP19790156879
申请日期
1979.12.05
申请人
FUJITSU LTD
发明人
YOKOYAMA KAORU
分类号
B21F23/00
主分类号
B21F23/00
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