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发明名称
VERFAHREN ZUR FORMUNG EINES RINGES MIT U-FOERMIGEM QUERSCHNITT
摘要
申请公布号
DE2745070(A1)
申请公布日期
1978.04.27
申请号
DE19772745070
申请日期
1977.10.06
申请人
SPISAK,EDWARD G.
发明人
G. SPISAK,EDWARD
分类号
B21D53/18;(IPC1-7):B21D53/16
主分类号
B21D53/18
代理机构
代理人
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