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发明名称
MANUFACTURE OF SPIRAL STEEL PIPE
摘要
申请公布号
JPS53142361(A)
申请公布日期
1978.12.12
申请号
JP19770057106
申请日期
1977.05.19
申请人
NIPPON KOKAN KK
发明人
SUGIYAMA TADAO;NISHINO YUKIO
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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