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发明名称
摘要
申请公布号
JPS5435986(B2)
申请公布日期
1979.11.06
申请号
JP19750084526
申请日期
1975.07.11
申请人
发明人
分类号
B21B37/18;B21B37/66
主分类号
B21B37/18
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