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发明名称
An improved method and means of shaping sheet-metal under pressure
摘要
申请公布号
GB565681(A)
申请公布日期
1944.11.22
申请号
GB19430004307
申请日期
1943.05.17
申请人
HELLIWELLS LIMITED;JACK RANSOM
发明人
分类号
B21D22/10
主分类号
B21D22/10
代理机构
代理人
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