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发明名称
Method of forming a spigot on the end of a tubular member
摘要
申请公布号
GB981365(A)
申请公布日期
1965.01.27
申请号
GB19630009233
申请日期
1963.03.08
申请人
WELLINGTON ENGINEERING WORKS LIMITED
发明人
SHIRLEY JOHN WALLIS
分类号
B21D41/04;B21K21/12
主分类号
B21D41/04
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代理人
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