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发明名称
Improvements in and relating to methods and apparatus for corrugating metal tubes
摘要
申请公布号
GB480893(A)
申请公布日期
1938.03.02
申请号
GB19360029278
申请日期
1936.10.28
申请人
LOUIS H. BRINKMAN
发明人
分类号
B21C37/20
主分类号
B21C37/20
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