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发明名称
Improvements in the drawing of rod and tube
摘要
申请公布号
GB670210(A)
申请公布日期
1952.04.16
申请号
GB19490021159
申请日期
1949.08.15
申请人
METAL MANUFACTURES LIMITED
发明人
分类号
B21C1/16
主分类号
B21C1/16
代理机构
代理人
主权项
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