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发明名称
BORING MACHINE
摘要
申请公布号
JPH11173047(A)
申请公布日期
1999.06.29
申请号
JP19970343191
申请日期
1997.12.12
申请人
HITACHI CONSTR MACH CO LTD
发明人
SEKI KAZUHIDE;SHIBA YOSHIMI
分类号
E21B3/00;E21B7/00;(IPC1-7):E21B3/00
主分类号
E21B3/00
代理机构
代理人
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地址
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