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发明名称
Improvements relating to draw benches for use in the manufacture of metallic tubes
摘要
申请公布号
GB503435(A)
申请公布日期
1939.04.06
申请号
GB19370030682
申请日期
1937.11.09
申请人
DUNCAN CRERAR LENNIE
发明人
分类号
B21C1/28
主分类号
B21C1/28
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代理人
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