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发明名称
Device for use in forming undercut sections of rolled metal
摘要
申请公布号
US1826813(A)
申请公布日期
1931.10.13
申请号
US19270196601
申请日期
1927.06.04
申请人
HERMANN OBERSCHULTE
发明人
OBERSCHULTE HERMANN
分类号
B21B1/08
主分类号
B21B1/08
代理机构
代理人
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地址
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