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经营范围
发明名称
Die apparatus
摘要
申请公布号
US2591108(A)
申请公布日期
1952.04.01
申请号
US19490072347
申请日期
1949.01.24
申请人
PRODUCTION TOOL AND DIE CO., INC.
发明人
VIGNEAULT OSWALD R.;SMALL DOUGLAS M.
分类号
B21D22/02
主分类号
B21D22/02
代理机构
代理人
主权项
地址
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