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发明名称
Improvements in or relating to the production of gilled or finned tubing for heat exchangers
摘要
申请公布号
GB835136(A)
申请公布日期
1960.05.18
申请号
GB19570003500
申请日期
1957.02.01
申请人
BASIL FIELDING WITHNELL
发明人
分类号
B21C37/24
主分类号
B21C37/24
代理机构
代理人
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