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发明名称
Apparatus for expanding slitted metal sheets
摘要
申请公布号
US1839975(A)
申请公布日期
1932.01.05
申请号
US19280269773
申请日期
1928.04.13
申请人
REPUBLIC STEEL CORPORATION
发明人
LENTZ GEORGE W.
分类号
B21D31/04
主分类号
B21D31/04
代理机构
代理人
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地址
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