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经营范围
发明名称
Metal punching apparatus
摘要
申请公布号
US2798553(A)
申请公布日期
1957.07.09
申请号
US19560626377
申请日期
1956.12.05
申请人
BUCK ENGINEERING COMPANY, INC.
发明人
BERDAN DAVID
分类号
B21D28/04;B21D28/26
主分类号
B21D28/04
代理机构
代理人
主权项
地址
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