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经营范围
发明名称
UNDERGROUND PIPE LAYING METHOD USING PILE DRIFT
摘要
申请公布号
JPS6393992(A)
申请公布日期
1988.04.25
申请号
JP19860240484
申请日期
1986.10.09
申请人
NAGANO SEIJI
发明人
NAGANO SEIJI
分类号
E21D9/08
主分类号
E21D9/08
代理机构
代理人
主权项
地址
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