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发明名称
IMPROVEMENTS IN OR RELATING TO FINNED TUBE WELDING
摘要
申请公布号
GB1245580(A)
申请公布日期
1971.09.08
申请号
GB19670046691
申请日期
1967.10.12
申请人
BRITISH STEEL CORPORATION
发明人
PETER JOHN FINCH;RONALD MARLOW
分类号
B21C37/26;B23K9/032
主分类号
B21C37/26
代理机构
代理人
主权项
地址
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