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发明名称
Improved method of manufacturing metal tubes and pipes
摘要
申请公布号
GB451357(A)
申请公布日期
1936.08.04
申请号
GB19350003609
申请日期
1935.02.04
申请人
FINSPONGS METALLVERKS AKTIEBOLAG
发明人
分类号
B21C3/16
主分类号
B21C3/16
代理机构
代理人
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