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发明名称
Improvements in or relating to the manufacture of drop forgings
摘要
申请公布号
GB342481(A)
申请公布日期
1931.02.05
申请号
GB19290039898
申请日期
1929.12.31
申请人
ENGLISH STE?L CORPORATION LIMITED;ROBERT BRUCE
发明人
分类号
B21K1/30
主分类号
B21K1/30
代理机构
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