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发明名称
Sheet metal working machine
摘要
申请公布号
US1812479(A)
申请公布日期
1931.06.30
申请号
US19280308183
申请日期
1928.09.25
申请人
NIAGARA MACHINE AND TOOL WORKS
发明人
HAHNEMANN PAUL R.
分类号
B21D17/04
主分类号
B21D17/04
代理机构
代理人
主权项
地址
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