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发明名称
SPIRAL-SHAPED ROLLER CUTTER AND TUNNEL EXCAVATOR CUTTER HEAD PROVIDED WITH SAME
摘要
申请公布号
EP0915231(A4)
申请公布日期
2000.11.15
申请号
EP19970930849
申请日期
1997.07.22
申请人
KOMATSU LTD.
发明人
KURAMOTO, TOYOSHI;TAKADA, HIROSHI;OKUYAMA, JUNICHIROU
分类号
E21D9/06;E21B10/16;E21B29/10;E21D9/10;(IPC1-7):E21D9/08;E21B10/10
主分类号
E21D9/06
代理机构
代理人
主权项
地址
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