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发明名称
Roll feed
摘要
申请公布号
US2451833(A)
申请公布日期
1948.10.19
申请号
US19470770098
申请日期
1947.08.22
申请人
ASSOCIATED PATENTEES, INC.
发明人
KOCH FREDERICK
分类号
B21D43/09
主分类号
B21D43/09
代理机构
代理人
主权项
地址
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