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发明名称
APPARATUS AND METHOD FOR CONNECTING STEEL PIPE
摘要
申请公布号
KR1019940009127(B1)
申请公布日期
1994.10.01
申请号
KR1019920011955
申请日期
1992.07.04
申请人
发明人
分类号
主分类号
代理机构
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