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发明名称
摘要
申请公布号
JPS5232345(B2)
申请公布日期
1977.08.20
申请号
JP19710098452
申请日期
1971.12.06
申请人
发明人
分类号
B21C37/29;B21D19/02;B21D19/08
主分类号
B21C37/29
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代理人
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