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发明名称
Apparatus for making helically wound pipes or tubes
摘要
申请公布号
US3269632(A)
申请公布日期
1966.08.30
申请号
US19630283284
申请日期
1963.05.27
申请人
MILLAR
发明人
GROVES JOHN CREED;PENROSE JAMES RONALD;MILLAR JOHN HUMPHREY
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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