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发明名称
Drawing tool
摘要
申请公布号
GB2077646(A)
申请公布日期
1981.12.23
申请号
GB19800019922
申请日期
1980.06.18
申请人
URALSKY NAUCHNO ISSLEDOVATELSKY INSTITUT CHERNYKH METALL
发明人
分类号
B21C3/14;B21C9/00;(IPC1-7):B21C3/12
主分类号
B21C3/14
代理机构
代理人
主权项
地址
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