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经营范围
发明名称
Method for making nuts, bolt, rivet and screw blanks, and other articles
摘要
申请公布号
US1832167(A)
申请公布日期
1931.11.17
申请号
US19300445977
申请日期
1930.04.21
申请人
THE WATERBURY FARREL FOUNDRY AND MACHINE COMPANY
发明人
WILCOX RICHARD LESTER
分类号
B21K1/64
主分类号
B21K1/64
代理机构
代理人
主权项
地址
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