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发明名称
PROCESSO PARA A FABRICACAO DE UMA ARRUELA
摘要
申请公布号
BR9202881(A)
申请公布日期
1993.04.27
申请号
BR1992PI02881
申请日期
1992.07.27
申请人
WEN-YUAN LEE
发明人
WEN-YUAN LEE
分类号
B21F37/04;B21K1/76;(IPC1-7):B21D53/20
主分类号
B21F37/04
代理机构
代理人
主权项
地址
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