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发明名称
Improvements in or relating to the drawing of metal tubes and the like
摘要
申请公布号
GB595780(A)
申请公布日期
1947.12.16
申请号
GB19450016833
申请日期
1945.07.02
申请人
THE WELLMAN SMITH OWEN ENGINEERING CORPORATION LIMITED;JOHN MARNIE
发明人
分类号
B21C1/32
主分类号
B21C1/32
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