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经营范围
发明名称
Self-locking nuts
摘要
申请公布号
GB675028(A)
申请公布日期
1952.07.02
申请号
GB19490027436
申请日期
1949.10.25
申请人
HENRY OLGER ENGSTROM
发明人
分类号
B21K1/70;F16B39/04;F16B39/28;F16B39/284;F16B39/286
主分类号
B21K1/70
代理机构
代理人
主权项
地址
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