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发明名称
METHOD OF SMALL-BORE OLD-PIPE RECLAMATION CONSTRUCTION AND DEVICE
摘要
申请公布号
JPH0197795(A)
申请公布日期
1989.04.17
申请号
JP19870252488
申请日期
1987.10.08
申请人
NKK CORP
发明人
KOTSUKI ZENJI
分类号
E21D9/06
主分类号
E21D9/06
代理机构
代理人
主权项
地址
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