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经营范围
发明名称
SPIRAL PIPE MILL
摘要
申请公布号
GB2079639(B)
申请公布日期
1984.08.30
申请号
GB19810018723
申请日期
1981.06.18
申请人
BYARD W & CO (SPIRAL PIPE) LTD
发明人
分类号
B21C37/12;(IPC1-7):B21C37/08
主分类号
B21C37/12
代理机构
代理人
主权项
地址
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