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经营范围
发明名称
WELDED UPPER ROLL OF RESISTANCE WELDED TUBE
摘要
申请公布号
JPH01162579(A)
申请公布日期
1989.06.27
申请号
JP19870319665
申请日期
1987.12.17
申请人
NIPPON STEEL CORP;SANYO SEIKI:KK
发明人
NAGATA AKIRA;SUZUKI MASAYUKI;KIYATAKE YUKITOSHI
分类号
B21C37/08;B23K11/08;B23K11/36
主分类号
B21C37/08
代理机构
代理人
主权项
地址
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