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发明名称
HOLE DRILLING DEVICE
摘要
申请公布号
JPH09151685(A)
申请公布日期
1997.06.10
申请号
JP19950335843
申请日期
1995.11.30
申请人
TOKYU CONSTR CO LTD;KOKEN BORING MACH CO LTD;TOSHIBA TUNGALOY CO LTD
发明人
IWAMURA IWAO;ITO HISAO;SUZUKI SHOZO;HIRAKAWA KUNIHIKO;UMEMOTO YASUHIRO;KOBAYASHI SUNAO
分类号
E21B10/40;(IPC1-7):E21B10/40
主分类号
E21B10/40
代理机构
代理人
主权项
地址
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