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发明名称
VERTICAL HOLE EXCAVATOR
摘要
申请公布号
JPH1061361(A)
申请公布日期
1998.03.03
申请号
JP19960218361
申请日期
1996.08.20
申请人
EAST JAPAN RAILWAY CO;OHBAYASHI CORP
发明人
MORIMOTO TAKEO;YAMAZAKI TAICHI;NIIHORI TOSHIHIKO;TSUCHIYA KOSABURO;AMANO KINZABURO;KOYAMA HIROSHI
分类号
E21B7/00;E21D1/08;(IPC1-7):E21B7/00
主分类号
E21B7/00
代理机构
代理人
主权项
地址
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