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发明名称
Means for closing the ends of metal tubes
摘要
申请公布号
GB576259(A)
申请公布日期
1946.03.26
申请号
GB19440008444
申请日期
1944.05.04
申请人
HALL BROS. (NETHERTON) LIMITED;DAVID HALL
发明人
分类号
B21D41/04
主分类号
B21D41/04
代理机构
代理人
主权项
地址
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