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发明名称
METHOD OF MANUFACTURE OF SPIRAL STEEL PIPE
摘要
申请公布号
JPS51143556(A)
申请公布日期
1976.12.09
申请号
JP19750067674
申请日期
1975.06.06
申请人
NIPPON KOKAN KK
发明人
IDO SADAMITSU;TAMURA YUTAKA
分类号
B21C37/12
主分类号
B21C37/12
代理机构
代理人
主权项
地址
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