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发明名称
Method of manufacturing a washer
摘要
申请公布号
US5259819(A)
申请公布日期
1993.11.09
申请号
US19910772415
申请日期
1991.10.07
申请人
LEE, WEN-YUAN
发明人
LEE, WEN-YUAN
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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