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发明名称
METHOD AND APPARATUS FOR QUADRATURALLY FIXING METAL HOLLOW PIPE
摘要
申请公布号
KR100242159(B1)
申请公布日期
2000.03.02
申请号
KR19980010023
申请日期
1998.03.14
申请人
SEO, JE-BU
发明人
SEO, JE-BU
分类号
B21D39/00;(IPC1-7):B21D39/00
主分类号
B21D39/00
代理机构
代理人
主权项
地址
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