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发明名称
FORMED METAL SURFACES
摘要
申请公布号
GB1469093(A)
申请公布日期
1977.03.30
申请号
GB19720056085
申请日期
1972.12.05
申请人
BRITISH STEEL CORP
发明人
分类号
B21D31/00;(IPC1-7):B23D5/00
主分类号
B21D31/00
代理机构
代理人
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