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发明名称
A METHOD OF PRODUCING A HARDENED SHEET STEEL PRODUCT
摘要
申请公布号
KR20010022680(A)
申请公布日期
2001.03.26
申请号
KR1020007001275
申请日期
2000.02.07
申请人
发明人
分类号
B21D31/02
主分类号
B21D31/02
代理机构
代理人
主权项
地址
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