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发明名称
摘要
申请公布号
JPS5938043(B2)
申请公布日期
1984.09.13
申请号
JP19760057755
申请日期
1976.05.21
申请人
HITACHI METALS LTD
发明人
OKADA KUNIAKI
分类号
B21C37/00;B21D5/08;B21D7/08
主分类号
B21C37/00
代理机构
代理人
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