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经营范围
发明名称
BORING ROD CHANGER
摘要
申请公布号
JPH11173053(A)
申请公布日期
1999.06.29
申请号
JP19970362646
申请日期
1997.12.12
申请人
RAITO KOGYO CO LTD;NIPPON KENSETSU KIKAI SHOJI KK;YBM CO LTD
发明人
YOSHINAGA HIROSHI;NOZAKI MASATO;KANBARA TAKASHI;OTSUBO SHUHEI
分类号
E21B19/20;(IPC1-7):E21B19/20
主分类号
E21B19/20
代理机构
代理人
主权项
地址
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